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Finding the Fourth Proportional to 73,200.78, 101,017.08 and 39,666.78

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Solution

The fourth proportional to 73,200.78, 101,017.08 and 39,666.78 is: 54,740.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200.78 : 101,017.08 = 39,666.78 : x
  2. Step 2: Convert to fraction form
    73,200.78/101,017.08 = 39,666.78/x
  3. Step 3: Cross multiply
    73,200.78x = 101,017.08 × 39,666.78
  4. Step 4: Simplify right side
    73,200.78x = 4,007,022,288.60
  5. Step 5: Solve for x
    x = 4,007,022,288.60/73,200.78
  6. Step 6: Final answer
    x = 54,740.16

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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.