Home / 72,177.03-99,600.27-39,909.78

Finding the Fourth Proportional to 72,177.03, 99,600.27 and 39,909.78

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Solution

The fourth proportional to 72,177.03, 99,600.27 and 39,909.78 is: 55,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.03 : 99,600.27 = 39,909.78 : x
  2. Step 2: Convert to fraction form
    72,177.03/99,600.27 = 39,909.78/x
  3. Step 3: Cross multiply
    72,177.03x = 99,600.27 × 39,909.78
  4. Step 4: Simplify right side
    72,177.03x = 3,975,024,863.64
  5. Step 5: Solve for x
    x = 3,975,024,863.64/72,177.03
  6. Step 6: Final answer
    x = 55,073.27

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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.