Home / 90,489.20-124,875.18-52,770.74

Finding the Fourth Proportional to 90,489.20, 124,875.18 and 52,770.74

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Solution

The fourth proportional to 90,489.20, 124,875.18 and 52,770.74 is: 72,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,489.20 : 124,875.18 = 52,770.74 : x
  2. Step 2: Convert to fraction form
    90,489.20/124,875.18 = 52,770.74/x
  3. Step 3: Cross multiply
    90,489.20x = 124,875.18 × 52,770.74
  4. Step 4: Simplify right side
    90,489.20x = 6,589,755,031.86
  5. Step 5: Solve for x
    x = 6,589,755,031.86/90,489.20
  6. Step 6: Final answer
    x = 72,823.67

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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.