Home / 72,117.92-99,524.76-40,290.32

Finding the Fourth Proportional to 72,117.92, 99,524.76 and 40,290.32

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Solution

The fourth proportional to 72,117.92, 99,524.76 and 40,290.32 is: 55,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,117.92 : 99,524.76 = 40,290.32 : x
  2. Step 2: Convert to fraction form
    72,117.92/99,524.76 = 40,290.32/x
  3. Step 3: Cross multiply
    72,117.92x = 99,524.76 × 40,290.32
  4. Step 4: Simplify right side
    72,117.92x = 4,009,884,428.32
  5. Step 5: Solve for x
    x = 4,009,884,428.32/72,117.92
  6. Step 6: Final answer
    x = 55,601.78

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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.