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Finding the Fourth Proportional to 115,578.70, 159,498.65 and 64,593.52

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Solution

The fourth proportional to 115,578.70, 159,498.65 and 64,593.52 is: 89,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,578.70 : 159,498.65 = 64,593.52 : x
  2. Step 2: Convert to fraction form
    115,578.70/159,498.65 = 64,593.52/x
  3. Step 3: Cross multiply
    115,578.70x = 159,498.65 × 64,593.52
  4. Step 4: Simplify right side
    115,578.70x = 10,302,579,001.49
  5. Step 5: Solve for x
    x = 10,302,579,001.49/115,578.70
  6. Step 6: Final answer
    x = 89,139.08

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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.