Home / 91,418.01-137,130.03-31,445.88

Finding the Fourth Proportional to 91,418.01, 137,130.03 and 31,445.88

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Solution

The fourth proportional to 91,418.01, 137,130.03 and 31,445.88 is: 47,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,418.01 : 137,130.03 = 31,445.88 : x
  2. Step 2: Convert to fraction form
    91,418.01/137,130.03 = 31,445.88/x
  3. Step 3: Cross multiply
    91,418.01x = 137,130.03 × 31,445.88
  4. Step 4: Simplify right side
    91,418.01x = 4,312,174,467.78
  5. Step 5: Solve for x
    x = 4,312,174,467.78/91,418.01
  6. Step 6: Final answer
    x = 47,169.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.