Home / 82,780.74-124,073.85-38,313.57

Finding the Fourth Proportional to 82,780.74, 124,073.85 and 38,313.57

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Solution

The fourth proportional to 82,780.74, 124,073.85 and 38,313.57 is: 57,425.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,780.74 : 124,073.85 = 38,313.57 : x
  2. Step 2: Convert to fraction form
    82,780.74/124,073.85 = 38,313.57/x
  3. Step 3: Cross multiply
    82,780.74x = 124,073.85 × 38,313.57
  4. Step 4: Simplify right side
    82,780.74x = 4,753,712,137.14
  5. Step 5: Solve for x
    x = 4,753,712,137.14/82,780.74
  6. Step 6: Final answer
    x = 57,425.34

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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.