Home / 76,515.38-105,591.13-42,522.79

Finding the Fourth Proportional to 76,515.38, 105,591.13 and 42,522.79

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Solution

The fourth proportional to 76,515.38, 105,591.13 and 42,522.79 is: 58,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,515.38 : 105,591.13 = 42,522.79 : x
  2. Step 2: Convert to fraction form
    76,515.38/105,591.13 = 42,522.79/x
  3. Step 3: Cross multiply
    76,515.38x = 105,591.13 × 42,522.79
  4. Step 4: Simplify right side
    76,515.38x = 4,490,029,446.85
  5. Step 5: Solve for x
    x = 4,490,029,446.85/76,515.38
  6. Step 6: Final answer
    x = 58,681.40

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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.