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Finding the Fourth Proportional to 73,513.13, 101,448.12 and 39,979.13

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Solution

The fourth proportional to 73,513.13, 101,448.12 and 39,979.13 is: 55,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,513.13 : 101,448.12 = 39,979.13 : x
  2. Step 2: Convert to fraction form
    73,513.13/101,448.12 = 39,979.13/x
  3. Step 3: Cross multiply
    73,513.13x = 101,448.12 × 39,979.13
  4. Step 4: Simplify right side
    73,513.13x = 4,055,807,070.50
  5. Step 5: Solve for x
    x = 4,055,807,070.50/73,513.13
  6. Step 6: Final answer
    x = 55,171.20

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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.