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Finding the Fourth Proportional to 89,655, 134,565.60 and 45,312.96

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Solution

The fourth proportional to 89,655, 134,565.60 and 45,312.96 is: 68,011.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,655 : 134,565.60 = 45,312.96 : x
  2. Step 2: Convert to fraction form
    89,655/134,565.60 = 45,312.96/x
  3. Step 3: Cross multiply
    89,655x = 134,565.60 × 45,312.96
  4. Step 4: Simplify right side
    89,655x = 6,097,565,650.18
  5. Step 5: Solve for x
    x = 6,097,565,650.18/89,655
  6. Step 6: Final answer
    x = 68,011.44

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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.