Home / 72,160.90-99,583.18-40,331.86

Finding the Fourth Proportional to 72,160.90, 99,583.18 and 40,331.86

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Solution

The fourth proportional to 72,160.90, 99,583.18 and 40,331.86 is: 55,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,160.90 : 99,583.18 = 40,331.86 : x
  2. Step 2: Convert to fraction form
    72,160.90/99,583.18 = 40,331.86/x
  3. Step 3: Cross multiply
    72,160.90x = 99,583.18 × 40,331.86
  4. Step 4: Simplify right side
    72,160.90x = 4,016,374,874.11
  5. Step 5: Solve for x
    x = 4,016,374,874.11/72,160.90
  6. Step 6: Final answer
    x = 55,658.60

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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.