Home / 72,233.28-99,685.80-40,400.28

Finding the Fourth Proportional to 72,233.28, 99,685.80 and 40,400.28

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Solution

The fourth proportional to 72,233.28, 99,685.80 and 40,400.28 is: 55,754.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,233.28 : 99,685.80 = 40,400.28 : x
  2. Step 2: Convert to fraction form
    72,233.28/99,685.80 = 40,400.28/x
  3. Step 3: Cross multiply
    72,233.28x = 99,685.80 × 40,400.28
  4. Step 4: Simplify right side
    72,233.28x = 4,027,334,232.02
  5. Step 5: Solve for x
    x = 4,027,334,232.02/72,233.28
  6. Step 6: Final answer
    x = 55,754.55

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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.