Home / 72,066.20-99,447.18-40,237.10

Finding the Fourth Proportional to 72,066.20, 99,447.18 and 40,237.10

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Solution

The fourth proportional to 72,066.20, 99,447.18 and 40,237.10 is: 55,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,066.20 : 99,447.18 = 40,237.10 : x
  2. Step 2: Convert to fraction form
    72,066.20/99,447.18 = 40,237.10/x
  3. Step 3: Cross multiply
    72,066.20x = 99,447.18 × 40,237.10
  4. Step 4: Simplify right side
    72,066.20x = 4,001,466,126.38
  5. Step 5: Solve for x
    x = 4,001,466,126.38/72,066.20
  6. Step 6: Final answer
    x = 55,524.87

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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.