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Finding the Fourth Proportional to 52,752.40, 79,139.40 and 17,717.20

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Solution

The fourth proportional to 52,752.40, 79,139.40 and 17,717.20 is: 26,579.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,752.40 : 79,139.40 = 17,717.20 : x
  2. Step 2: Convert to fraction form
    52,752.40/79,139.40 = 17,717.20/x
  3. Step 3: Cross multiply
    52,752.40x = 79,139.40 × 17,717.20
  4. Step 4: Simplify right side
    52,752.40x = 1,402,128,577.68
  5. Step 5: Solve for x
    x = 1,402,128,577.68/52,752.40
  6. Step 6: Final answer
    x = 26,579.43

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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.