Home / 81,508.88-122,237.76-31,585.52

Finding the Fourth Proportional to 81,508.88, 122,237.76 and 31,585.52

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Solution

The fourth proportional to 81,508.88, 122,237.76 and 31,585.52 is: 47,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,508.88 : 122,237.76 = 31,585.52 : x
  2. Step 2: Convert to fraction form
    81,508.88/122,237.76 = 31,585.52/x
  3. Step 3: Cross multiply
    81,508.88x = 122,237.76 × 31,585.52
  4. Step 4: Simplify right side
    81,508.88x = 3,860,943,213.24
  5. Step 5: Solve for x
    x = 3,860,943,213.24/81,508.88
  6. Step 6: Final answer
    x = 47,368.38

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1.5x scale

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.