Home / 72,207.95-99,639.30-39,937.44

Finding the Fourth Proportional to 72,207.95, 99,639.30 and 39,937.44

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Solution

The fourth proportional to 72,207.95, 99,639.30 and 39,937.44 is: 55,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.95 : 99,639.30 = 39,937.44 : x
  2. Step 2: Convert to fraction form
    72,207.95/99,639.30 = 39,937.44/x
  3. Step 3: Cross multiply
    72,207.95x = 99,639.30 × 39,937.44
  4. Step 4: Simplify right side
    72,207.95x = 3,979,338,565.39
  5. Step 5: Solve for x
    x = 3,979,338,565.39/72,207.95
  6. Step 6: Final answer
    x = 55,109.43

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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.