Home / 56,891.73-78,509.12-31,397.76

Finding the Fourth Proportional to 56,891.73, 78,509.12 and 31,397.76

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Solution

The fourth proportional to 56,891.73, 78,509.12 and 31,397.76 is: 43,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,891.73 : 78,509.12 = 31,397.76 : x
  2. Step 2: Convert to fraction form
    56,891.73/78,509.12 = 31,397.76/x
  3. Step 3: Cross multiply
    56,891.73x = 78,509.12 × 31,397.76
  4. Step 4: Simplify right side
    56,891.73x = 2,465,010,350.58
  5. Step 5: Solve for x
    x = 2,465,010,350.58/56,891.73
  6. Step 6: Final answer
    x = 43,328.09

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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.