Home / 72,032.16-99,403.44-40,208.88

Finding the Fourth Proportional to 72,032.16, 99,403.44 and 40,208.88

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Solution

The fourth proportional to 72,032.16, 99,403.44 and 40,208.88 is: 55,487.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,032.16 : 99,403.44 = 40,208.88 : x
  2. Step 2: Convert to fraction form
    72,032.16/99,403.44 = 40,208.88/x
  3. Step 3: Cross multiply
    72,032.16x = 99,403.44 × 40,208.88
  4. Step 4: Simplify right side
    72,032.16x = 3,996,900,990.55
  5. Step 5: Solve for x
    x = 3,996,900,990.55/72,032.16
  6. Step 6: Final answer
    x = 55,487.73

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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.