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Finding the Fourth Proportional to 66,767.47, 100,148.16 and 22,390.81

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Solution

The fourth proportional to 66,767.47, 100,148.16 and 22,390.81 is: 33,585.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,767.47 : 100,148.16 = 22,390.81 : x
  2. Step 2: Convert to fraction form
    66,767.47/100,148.16 = 22,390.81/x
  3. Step 3: Cross multiply
    66,767.47x = 100,148.16 × 22,390.81
  4. Step 4: Simplify right side
    66,767.47x = 2,242,397,921.67
  5. Step 5: Solve for x
    x = 2,242,397,921.67/66,767.47
  6. Step 6: Final answer
    x = 33,585.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.