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Finding the Fourth Proportional to 81,951.96, 113,125.48 and 64,052.78

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Solution

The fourth proportional to 81,951.96, 113,125.48 and 64,052.78 is: 88,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,951.96 : 113,125.48 = 64,052.78 : x
  2. Step 2: Convert to fraction form
    81,951.96/113,125.48 = 64,052.78/x
  3. Step 3: Cross multiply
    81,951.96x = 113,125.48 × 64,052.78
  4. Step 4: Simplify right side
    81,951.96x = 7,246,001,482.83
  5. Step 5: Solve for x
    x = 7,246,001,482.83/81,951.96
  6. Step 6: Final answer
    x = 88,417.67

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1.5x scale

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.