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Finding the Fourth Proportional to 65,490.87, 98,154.10 and 28,006.85

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Solution

The fourth proportional to 65,490.87, 98,154.10 and 28,006.85 is: 41,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,490.87 : 98,154.10 = 28,006.85 : x
  2. Step 2: Convert to fraction form
    65,490.87/98,154.10 = 28,006.85/x
  3. Step 3: Cross multiply
    65,490.87x = 98,154.10 × 28,006.85
  4. Step 4: Simplify right side
    65,490.87x = 2,748,987,155.59
  5. Step 5: Solve for x
    x = 2,748,987,155.59/65,490.87
  6. Step 6: Final answer
    x = 41,975.12

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1.5x scale

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.