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Finding the Fourth Proportional to 70,912.10, 97,852.17 and 40,691.30

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Solution

The fourth proportional to 70,912.10, 97,852.17 and 40,691.30 is: 56,150.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.10 : 97,852.17 = 40,691.30 : x
  2. Step 2: Convert to fraction form
    70,912.10/97,852.17 = 40,691.30/x
  3. Step 3: Cross multiply
    70,912.10x = 97,852.17 × 40,691.30
  4. Step 4: Simplify right side
    70,912.10x = 3,981,732,005.12
  5. Step 5: Solve for x
    x = 3,981,732,005.12/70,912.10
  6. Step 6: Final answer
    x = 56,150.25

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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.