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Finding the Fourth Proportional to 74,007.32, 111,007.13 and 65,781.77

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Solution

The fourth proportional to 74,007.32, 111,007.13 and 65,781.77 is: 98,669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,007.32 : 111,007.13 = 65,781.77 : x
  2. Step 2: Convert to fraction form
    74,007.32/111,007.13 = 65,781.77/x
  3. Step 3: Cross multiply
    74,007.32x = 111,007.13 × 65,781.77
  4. Step 4: Simplify right side
    74,007.32x = 7,302,244,610.08
  5. Step 5: Solve for x
    x = 7,302,244,610.08/74,007.32
  6. Step 6: Final answer
    x = 98,669.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.