Home / 85,221.10-127,690.38-51,840.18

Finding the Fourth Proportional to 85,221.10, 127,690.38 and 51,840.18

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Solution

The fourth proportional to 85,221.10, 127,690.38 and 51,840.18 is: 77,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,221.10 : 127,690.38 = 51,840.18 : x
  2. Step 2: Convert to fraction form
    85,221.10/127,690.38 = 51,840.18/x
  3. Step 3: Cross multiply
    85,221.10x = 127,690.38 × 51,840.18
  4. Step 4: Simplify right side
    85,221.10x = 6,619,492,283.47
  5. Step 5: Solve for x
    x = 6,619,492,283.47/85,221.10
  6. Step 6: Final answer
    x = 77,674.34

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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.