Home / 60,279.12-90,431.10-20,831.04

Finding the Fourth Proportional to 60,279.12, 90,431.10 and 20,831.04

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Solution

The fourth proportional to 60,279.12, 90,431.10 and 20,831.04 is: 31,250.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,279.12 : 90,431.10 = 20,831.04 : x
  2. Step 2: Convert to fraction form
    60,279.12/90,431.10 = 20,831.04/x
  3. Step 3: Cross multiply
    60,279.12x = 90,431.10 × 20,831.04
  4. Step 4: Simplify right side
    60,279.12x = 1,883,773,861.34
  5. Step 5: Solve for x
    x = 1,883,773,861.34/60,279.12
  6. Step 6: Final answer
    x = 31,250.85

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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.