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Finding the Fourth Proportional to 165,043.71, 247,578.80 and 52,739.78

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Solution

The fourth proportional to 165,043.71, 247,578.80 and 52,739.78 is: 79,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,043.71 : 247,578.80 = 52,739.78 : x
  2. Step 2: Convert to fraction form
    165,043.71/247,578.80 = 52,739.78/x
  3. Step 3: Cross multiply
    165,043.71x = 247,578.80 × 52,739.78
  4. Step 4: Simplify right side
    165,043.71x = 13,057,249,943.07
  5. Step 5: Solve for x
    x = 13,057,249,943.07/165,043.71
  6. Step 6: Final answer
    x = 79,113.89

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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.