Home / 77,840.02-116,760.14-21,680.29

Finding the Fourth Proportional to 77,840.02, 116,760.14 and 21,680.29

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Solution

The fourth proportional to 77,840.02, 116,760.14 and 21,680.29 is: 32,520.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,840.02 : 116,760.14 = 21,680.29 : x
  2. Step 2: Convert to fraction form
    77,840.02/116,760.14 = 21,680.29/x
  3. Step 3: Cross multiply
    77,840.02x = 116,760.14 × 21,680.29
  4. Step 4: Simplify right side
    77,840.02x = 2,531,393,457.94
  5. Step 5: Solve for x
    x = 2,531,393,457.94/77,840.02
  6. Step 6: Final answer
    x = 32,520.46

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.