Home / 89,432.79-123,344.01-55,417.65

Finding the Fourth Proportional to 89,432.79, 123,344.01 and 55,417.65

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Solution

The fourth proportional to 89,432.79, 123,344.01 and 55,417.65 is: 76,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,432.79 : 123,344.01 = 55,417.65 : x
  2. Step 2: Convert to fraction form
    89,432.79/123,344.01 = 55,417.65/x
  3. Step 3: Cross multiply
    89,432.79x = 123,344.01 × 55,417.65
  4. Step 4: Simplify right side
    89,432.79x = 6,835,435,175.78
  5. Step 5: Solve for x
    x = 6,835,435,175.78/89,432.79
  6. Step 6: Final answer
    x = 76,430.97

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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.