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Finding the Fourth Proportional to 72,652.87, 100,263.54 and 40,821.13

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Solution

The fourth proportional to 72,652.87, 100,263.54 and 40,821.13 is: 56,334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,652.87 : 100,263.54 = 40,821.13 : x
  2. Step 2: Convert to fraction form
    72,652.87/100,263.54 = 40,821.13/x
  3. Step 3: Cross multiply
    72,652.87x = 100,263.54 × 40,821.13
  4. Step 4: Simplify right side
    72,652.87x = 4,092,871,000.60
  5. Step 5: Solve for x
    x = 4,092,871,000.60/72,652.87
  6. Step 6: Final answer
    x = 56,334.61

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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.