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Finding the Fourth Proportional to 70,901.98, 97,785.12 and 42,602.20

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Solution

The fourth proportional to 70,901.98, 97,785.12 and 42,602.20 is: 58,755.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,901.98 : 97,785.12 = 42,602.20 : x
  2. Step 2: Convert to fraction form
    70,901.98/97,785.12 = 42,602.20/x
  3. Step 3: Cross multiply
    70,901.98x = 97,785.12 × 42,602.20
  4. Step 4: Simplify right side
    70,901.98x = 4,165,861,239.26
  5. Step 5: Solve for x
    x = 4,165,861,239.26/70,901.98
  6. Step 6: Final answer
    x = 58,755.22

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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.