Home / 81,122.90-121,569.15-59,897.30

Finding the Fourth Proportional to 81,122.90, 121,569.15 and 59,897.30

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Solution

The fourth proportional to 81,122.90, 121,569.15 and 59,897.30 is: 89,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,122.90 : 121,569.15 = 59,897.30 : x
  2. Step 2: Convert to fraction form
    81,122.90/121,569.15 = 59,897.30/x
  3. Step 3: Cross multiply
    81,122.90x = 121,569.15 × 59,897.30
  4. Step 4: Simplify right side
    81,122.90x = 7,281,663,848.30
  5. Step 5: Solve for x
    x = 7,281,663,848.30/81,122.90
  6. Step 6: Final answer
    x = 89,760.89

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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.