Home / 88,736.31-122,585.65-76,778.89

Finding the Fourth Proportional to 88,736.31, 122,585.65 and 76,778.89

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Solution

The fourth proportional to 88,736.31, 122,585.65 and 76,778.89 is: 106,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,736.31 : 122,585.65 = 76,778.89 : x
  2. Step 2: Convert to fraction form
    88,736.31/122,585.65 = 76,778.89/x
  3. Step 3: Cross multiply
    88,736.31x = 122,585.65 × 76,778.89
  4. Step 4: Simplify right side
    88,736.31x = 9,411,990,070.40
  5. Step 5: Solve for x
    x = 9,411,990,070.40/88,736.31
  6. Step 6: Final answer
    x = 106,066.95

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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.