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Finding the Fourth Proportional to 65,687.69, 90,622.17 and 48,501.24

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Solution

The fourth proportional to 65,687.69, 90,622.17 and 48,501.24 is: 66,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,687.69 : 90,622.17 = 48,501.24 : x
  2. Step 2: Convert to fraction form
    65,687.69/90,622.17 = 48,501.24/x
  3. Step 3: Cross multiply
    65,687.69x = 90,622.17 × 48,501.24
  4. Step 4: Simplify right side
    65,687.69x = 4,395,287,616.49
  5. Step 5: Solve for x
    x = 4,395,287,616.49/65,687.69
  6. Step 6: Final answer
    x = 66,911.90

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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.