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Finding the Fourth Proportional to 88,728.40, 133,162.16 and 61,899.92

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Solution

The fourth proportional to 88,728.40, 133,162.16 and 61,899.92 is: 92,898.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,728.40 : 133,162.16 = 61,899.92 : x
  2. Step 2: Convert to fraction form
    88,728.40/133,162.16 = 61,899.92/x
  3. Step 3: Cross multiply
    88,728.40x = 133,162.16 × 61,899.92
  4. Step 4: Simplify right side
    88,728.40x = 8,242,727,051.03
  5. Step 5: Solve for x
    x = 8,242,727,051.03/88,728.40
  6. Step 6: Final answer
    x = 92,898.41

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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.