Home / 56,915.71-78,546.30-31,425.69

Finding the Fourth Proportional to 56,915.71, 78,546.30 and 31,425.69

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Solution

The fourth proportional to 56,915.71, 78,546.30 and 31,425.69 is: 43,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,915.71 : 78,546.30 = 31,425.69 : x
  2. Step 2: Convert to fraction form
    56,915.71/78,546.30 = 31,425.69/x
  3. Step 3: Cross multiply
    56,915.71x = 78,546.30 × 31,425.69
  4. Step 4: Simplify right side
    56,915.71x = 2,468,371,829.12
  5. Step 5: Solve for x
    x = 2,468,371,829.12/56,915.71
  6. Step 6: Final answer
    x = 43,368.90

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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.