Home / 72,155.20-99,573.98-40,324.08

Finding the Fourth Proportional to 72,155.20, 99,573.98 and 40,324.08

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Solution

The fourth proportional to 72,155.20, 99,573.98 and 40,324.08 is: 55,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,155.20 : 99,573.98 = 40,324.08 : x
  2. Step 2: Convert to fraction form
    72,155.20/99,573.98 = 40,324.08/x
  3. Step 3: Cross multiply
    72,155.20x = 99,573.98 × 40,324.08
  4. Step 4: Simplify right side
    72,155.20x = 4,015,229,135.44
  5. Step 5: Solve for x
    x = 4,015,229,135.44/72,155.20
  6. Step 6: Final answer
    x = 55,647.12

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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.