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Finding the Fourth Proportional to 115,616.68, 159,547.65 and 64,629.52

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Solution

The fourth proportional to 115,616.68, 159,547.65 and 64,629.52 is: 89,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,616.68 : 159,547.65 = 64,629.52 : x
  2. Step 2: Convert to fraction form
    115,616.68/159,547.65 = 64,629.52/x
  3. Step 3: Cross multiply
    115,616.68x = 159,547.65 × 64,629.52
  4. Step 4: Simplify right side
    115,616.68x = 10,311,488,036.63
  5. Step 5: Solve for x
    x = 10,311,488,036.63/115,616.68
  6. Step 6: Final answer
    x = 89,186.85

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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.