Home / 56,531.16-78,013.30-31,385.56

Finding the Fourth Proportional to 56,531.16, 78,013.30 and 31,385.56

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Solution

The fourth proportional to 56,531.16, 78,013.30 and 31,385.56 is: 43,312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,531.16 : 78,013.30 = 31,385.56 : x
  2. Step 2: Convert to fraction form
    56,531.16/78,013.30 = 31,385.56/x
  3. Step 3: Cross multiply
    56,531.16x = 78,013.30 × 31,385.56
  4. Step 4: Simplify right side
    56,531.16x = 2,448,491,107.95
  5. Step 5: Solve for x
    x = 2,448,491,107.95/56,531.16
  6. Step 6: Final answer
    x = 43,312.24

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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.