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Finding the Fourth Proportional to 71,000.12, 97,980.15 and 39,169.01

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Solution

The fourth proportional to 71,000.12, 97,980.15 and 39,169.01 is: 54,053.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,000.12 : 97,980.15 = 39,169.01 : x
  2. Step 2: Convert to fraction form
    71,000.12/97,980.15 = 39,169.01/x
  3. Step 3: Cross multiply
    71,000.12x = 97,980.15 × 39,169.01
  4. Step 4: Simplify right side
    71,000.12x = 3,837,785,949.69
  5. Step 5: Solve for x
    x = 3,837,785,949.69/71,000.12
  6. Step 6: Final answer
    x = 54,053.24

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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.