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Finding the Fourth Proportional to 40,159.65, 55,420.79 and 22,254.87

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Solution

The fourth proportional to 40,159.65, 55,420.79 and 22,254.87 is: 30,711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,159.65 : 55,420.79 = 22,254.87 : x
  2. Step 2: Convert to fraction form
    40,159.65/55,420.79 = 22,254.87/x
  3. Step 3: Cross multiply
    40,159.65x = 55,420.79 × 22,254.87
  4. Step 4: Simplify right side
    40,159.65x = 1,233,382,365.47
  5. Step 5: Solve for x
    x = 1,233,382,365.47/40,159.65
  6. Step 6: Final answer
    x = 30,711.98

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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.