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Finding the Fourth Proportional to 70,129.56, 96,714.68 and 54,818.13

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Solution

The fourth proportional to 70,129.56, 96,714.68 and 54,818.13 is: 75,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.56 : 96,714.68 = 54,818.13 : x
  2. Step 2: Convert to fraction form
    70,129.56/96,714.68 = 54,818.13/x
  3. Step 3: Cross multiply
    70,129.56x = 96,714.68 × 54,818.13
  4. Step 4: Simplify right side
    70,129.56x = 5,301,717,901.15
  5. Step 5: Solve for x
    x = 5,301,717,901.15/70,129.56
  6. Step 6: Final answer
    x = 75,598.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.