Home / 81,070.88-121,575.33-38,938.93

Finding the Fourth Proportional to 81,070.88, 121,575.33 and 38,938.93

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Solution

The fourth proportional to 81,070.88, 121,575.33 and 38,938.93 is: 58,393.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,070.88 : 121,575.33 = 38,938.93 : x
  2. Step 2: Convert to fraction form
    81,070.88/121,575.33 = 38,938.93/x
  3. Step 3: Cross multiply
    81,070.88x = 121,575.33 × 38,938.93
  4. Step 4: Simplify right side
    81,070.88x = 4,734,012,960.66
  5. Step 5: Solve for x
    x = 4,734,012,960.66/81,070.88
  6. Step 6: Final answer
    x = 58,393.51

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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.