Home / 84,360.72-126,541.07-77,320.95

Finding the Fourth Proportional to 84,360.72, 126,541.07 and 77,320.95

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Solution

The fourth proportional to 84,360.72, 126,541.07 and 77,320.95 is: 115,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,360.72 : 126,541.07 = 77,320.95 : x
  2. Step 2: Convert to fraction form
    84,360.72/126,541.07 = 77,320.95/x
  3. Step 3: Cross multiply
    84,360.72x = 126,541.07 × 77,320.95
  4. Step 4: Simplify right side
    84,360.72x = 9,784,275,175.24
  5. Step 5: Solve for x
    x = 9,784,275,175.24/84,360.72
  6. Step 6: Final answer
    x = 115,981.40

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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.