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Finding the Fourth Proportional to 72,686.88, 109,030.32 and 40,062.24

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Solution

The fourth proportional to 72,686.88, 109,030.32 and 40,062.24 is: 60,093.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686.88 : 109,030.32 = 40,062.24 : x
  2. Step 2: Convert to fraction form
    72,686.88/109,030.32 = 40,062.24/x
  3. Step 3: Cross multiply
    72,686.88x = 109,030.32 × 40,062.24
  4. Step 4: Simplify right side
    72,686.88x = 4,367,998,847.12
  5. Step 5: Solve for x
    x = 4,367,998,847.12/72,686.88
  6. Step 6: Final answer
    x = 60,093.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.