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Finding the Fourth Proportional to 64,471.60, 88,968.72 and 36,177.76

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Solution

The fourth proportional to 64,471.60, 88,968.72 and 36,177.76 is: 49,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,471.60 : 88,968.72 = 36,177.76 : x
  2. Step 2: Convert to fraction form
    64,471.60/88,968.72 = 36,177.76/x
  3. Step 3: Cross multiply
    64,471.60x = 88,968.72 × 36,177.76
  4. Step 4: Simplify right side
    64,471.60x = 3,218,688,999.67
  5. Step 5: Solve for x
    x = 3,218,688,999.67/64,471.60
  6. Step 6: Final answer
    x = 49,924.14

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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.