Home / 56,625.90-78,143.80-31,132.70

Finding the Fourth Proportional to 56,625.90, 78,143.80 and 31,132.70

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Solution

The fourth proportional to 56,625.90, 78,143.80 and 31,132.70 is: 42,963.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,625.90 : 78,143.80 = 31,132.70 : x
  2. Step 2: Convert to fraction form
    56,625.90/78,143.80 = 31,132.70/x
  3. Step 3: Cross multiply
    56,625.90x = 78,143.80 × 31,132.70
  4. Step 4: Simplify right side
    56,625.90x = 2,432,827,326.60
  5. Step 5: Solve for x
    x = 2,432,827,326.60/56,625.90
  6. Step 6: Final answer
    x = 42,963.15

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1.5x scale

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.