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Finding the Fourth Proportional to 65,737.23, 90,728.78 and 63,550.23

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Solution

The fourth proportional to 65,737.23, 90,728.78 and 63,550.23 is: 87,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,737.23 : 90,728.78 = 63,550.23 : x
  2. Step 2: Convert to fraction form
    65,737.23/90,728.78 = 63,550.23/x
  3. Step 3: Cross multiply
    65,737.23x = 90,728.78 × 63,550.23
  4. Step 4: Simplify right side
    65,737.23x = 5,765,834,518.87
  5. Step 5: Solve for x
    x = 5,765,834,518.87/65,737.23
  6. Step 6: Final answer
    x = 87,710.34

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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.