Home / 84,569.90-126,698.24-42,400.76

Finding the Fourth Proportional to 84,569.90, 126,698.24 and 42,400.76

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Solution

The fourth proportional to 84,569.90, 126,698.24 and 42,400.76 is: 63,522.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,569.90 : 126,698.24 = 42,400.76 : x
  2. Step 2: Convert to fraction form
    84,569.90/126,698.24 = 42,400.76/x
  3. Step 3: Cross multiply
    84,569.90x = 126,698.24 × 42,400.76
  4. Step 4: Simplify right side
    84,569.90x = 5,372,101,139.17
  5. Step 5: Solve for x
    x = 5,372,101,139.17/84,569.90
  6. Step 6: Final answer
    x = 63,522.62

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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.