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Finding the Fourth Proportional to 111,335.52, 153,639.84 and 63,587.88

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Solution

The fourth proportional to 111,335.52, 153,639.84 and 63,587.88 is: 87,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,335.52 : 153,639.84 = 63,587.88 : x
  2. Step 2: Convert to fraction form
    111,335.52/153,639.84 = 63,587.88/x
  3. Step 3: Cross multiply
    111,335.52x = 153,639.84 × 63,587.88
  4. Step 4: Simplify right side
    111,335.52x = 9,769,631,709.14
  5. Step 5: Solve for x
    x = 9,769,631,709.14/111,335.52
  6. Step 6: Final answer
    x = 87,749.46

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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.