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Finding the Fourth Proportional to 40,064.49, 55,287.90 and 22,158.90

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Solution

The fourth proportional to 40,064.49, 55,287.90 and 22,158.90 is: 30,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,064.49 : 55,287.90 = 22,158.90 : x
  2. Step 2: Convert to fraction form
    40,064.49/55,287.90 = 22,158.90/x
  3. Step 3: Cross multiply
    40,064.49x = 55,287.90 × 22,158.90
  4. Step 4: Simplify right side
    40,064.49x = 1,225,119,047.31
  5. Step 5: Solve for x
    x = 1,225,119,047.31/40,064.49
  6. Step 6: Final answer
    x = 30,578.68

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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.