Home / 72,158.65-99,580.07-40,329.61

Finding the Fourth Proportional to 72,158.65, 99,580.07 and 40,329.61

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Solution

The fourth proportional to 72,158.65, 99,580.07 and 40,329.61 is: 55,655.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.65 : 99,580.07 = 40,329.61 : x
  2. Step 2: Convert to fraction form
    72,158.65/99,580.07 = 40,329.61/x
  3. Step 3: Cross multiply
    72,158.65x = 99,580.07 × 40,329.61
  4. Step 4: Simplify right side
    72,158.65x = 4,016,025,185.22
  5. Step 5: Solve for x
    x = 4,016,025,185.22/72,158.65
  6. Step 6: Final answer
    x = 55,655.49

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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.