Home / 56,815.50-78,405.76-31,666.62

Finding the Fourth Proportional to 56,815.50, 78,405.76 and 31,666.62

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Solution

The fourth proportional to 56,815.50, 78,405.76 and 31,666.62 is: 43,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,815.50 : 78,405.76 = 31,666.62 : x
  2. Step 2: Convert to fraction form
    56,815.50/78,405.76 = 31,666.62/x
  3. Step 3: Cross multiply
    56,815.50x = 78,405.76 × 31,666.62
  4. Step 4: Simplify right side
    56,815.50x = 2,482,845,407.73
  5. Step 5: Solve for x
    x = 2,482,845,407.73/56,815.50
  6. Step 6: Final answer
    x = 43,700.14

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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.