Home / 57,631.50-79,531.47-31,135.50

Finding the Fourth Proportional to 57,631.50, 79,531.47 and 31,135.50

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Solution

The fourth proportional to 57,631.50, 79,531.47 and 31,135.50 is: 42,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,631.50 : 79,531.47 = 31,135.50 : x
  2. Step 2: Convert to fraction form
    57,631.50/79,531.47 = 31,135.50/x
  3. Step 3: Cross multiply
    57,631.50x = 79,531.47 × 31,135.50
  4. Step 4: Simplify right side
    57,631.50x = 2,476,252,084.19
  5. Step 5: Solve for x
    x = 2,476,252,084.19/57,631.50
  6. Step 6: Final answer
    x = 42,966.99

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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.