Home / 57,612.50-79,505.26-31,116.50

Finding the Fourth Proportional to 57,612.50, 79,505.26 and 31,116.50

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Solution

The fourth proportional to 57,612.50, 79,505.26 and 31,116.50 is: 42,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,612.50 : 79,505.26 = 31,116.50 : x
  2. Step 2: Convert to fraction form
    57,612.50/79,505.26 = 31,116.50/x
  3. Step 3: Cross multiply
    57,612.50x = 79,505.26 × 31,116.50
  4. Step 4: Simplify right side
    57,612.50x = 2,473,925,422.79
  5. Step 5: Solve for x
    x = 2,473,925,422.79/57,612.50
  6. Step 6: Final answer
    x = 42,940.78

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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.