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Finding the Fourth Proportional to 91,587.84, 126,339.60 and 53,342.88

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Solution

The fourth proportional to 91,587.84, 126,339.60 and 53,342.88 is: 73,583.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,587.84 : 126,339.60 = 53,342.88 : x
  2. Step 2: Convert to fraction form
    91,587.84/126,339.60 = 53,342.88/x
  3. Step 3: Cross multiply
    91,587.84x = 126,339.60 × 53,342.88
  4. Step 4: Simplify right side
    91,587.84x = 6,739,318,122.05
  5. Step 5: Solve for x
    x = 6,739,318,122.05/91,587.84
  6. Step 6: Final answer
    x = 73,583.11

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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.