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Finding the Fourth Proportional to 101,441.92, 139,973.52 and 63,767.20

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Solution

The fourth proportional to 101,441.92, 139,973.52 and 63,767.20 is: 87,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,441.92 : 139,973.52 = 63,767.20 : x
  2. Step 2: Convert to fraction form
    101,441.92/139,973.52 = 63,767.20/x
  3. Step 3: Cross multiply
    101,441.92x = 139,973.52 × 63,767.20
  4. Step 4: Simplify right side
    101,441.92x = 8,925,719,444.54
  5. Step 5: Solve for x
    x = 8,925,719,444.54/101,441.92
  6. Step 6: Final answer
    x = 87,988.47

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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.