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Finding the Fourth Proportional to 65,282.87, 89,503.65 and 64,101.89

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Solution

The fourth proportional to 65,282.87, 89,503.65 and 64,101.89 is: 87,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,282.87 : 89,503.65 = 64,101.89 : x
  2. Step 2: Convert to fraction form
    65,282.87/89,503.65 = 64,101.89/x
  3. Step 3: Cross multiply
    65,282.87x = 89,503.65 × 64,101.89
  4. Step 4: Simplify right side
    65,282.87x = 5,737,353,126.90
  5. Step 5: Solve for x
    x = 5,737,353,126.90/65,282.87
  6. Step 6: Final answer
    x = 87,884.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.