Home / 82,430.74-123,655.20-26,257.78

Finding the Fourth Proportional to 82,430.74, 123,655.20 and 26,257.78

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Solution

The fourth proportional to 82,430.74, 123,655.20 and 26,257.78 is: 39,389.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,430.74 : 123,655.20 = 26,257.78 : x
  2. Step 2: Convert to fraction form
    82,430.74/123,655.20 = 26,257.78/x
  3. Step 3: Cross multiply
    82,430.74x = 123,655.20 × 26,257.78
  4. Step 4: Simplify right side
    82,430.74x = 3,246,911,037.46
  5. Step 5: Solve for x
    x = 3,246,911,037.46/82,430.74
  6. Step 6: Final answer
    x = 39,389.57

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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.