Home / 56,625.30-78,136.12-31,127.46

Finding the Fourth Proportional to 56,625.30, 78,136.12 and 31,127.46

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Solution

The fourth proportional to 56,625.30, 78,136.12 and 31,127.46 is: 42,952.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,625.30 : 78,136.12 = 31,127.46 : x
  2. Step 2: Convert to fraction form
    56,625.30/78,136.12 = 31,127.46/x
  3. Step 3: Cross multiply
    56,625.30x = 78,136.12 × 31,127.46
  4. Step 4: Simplify right side
    56,625.30x = 2,432,179,267.48
  5. Step 5: Solve for x
    x = 2,432,179,267.48/56,625.30
  6. Step 6: Final answer
    x = 42,952.16

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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.