Home / 91,891.12-126,821.50-56,073.52

Finding the Fourth Proportional to 91,891.12, 126,821.50 and 56,073.52

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Solution

The fourth proportional to 91,891.12, 126,821.50 and 56,073.52 is: 77,388.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,891.12 : 126,821.50 = 56,073.52 : x
  2. Step 2: Convert to fraction form
    91,891.12/126,821.50 = 56,073.52/x
  3. Step 3: Cross multiply
    91,891.12x = 126,821.50 × 56,073.52
  4. Step 4: Simplify right side
    91,891.12x = 7,111,327,916.68
  5. Step 5: Solve for x
    x = 7,111,327,916.68/91,891.12
  6. Step 6: Final answer
    x = 77,388.63

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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.