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Finding the Fourth Proportional to 78,753.41, 118,130.54 and 19,589.08

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Solution

The fourth proportional to 78,753.41, 118,130.54 and 19,589.08 is: 29,383.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753.41 : 118,130.54 = 19,589.08 : x
  2. Step 2: Convert to fraction form
    78,753.41/118,130.54 = 19,589.08/x
  3. Step 3: Cross multiply
    78,753.41x = 118,130.54 × 19,589.08
  4. Step 4: Simplify right side
    78,753.41x = 2,314,068,536.91
  5. Step 5: Solve for x
    x = 2,314,068,536.91/78,753.41
  6. Step 6: Final answer
    x = 29,383.73

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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.