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Finding the Fourth Proportional to 52,746.40, 79,130.40 and 17,711.20

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Solution

The fourth proportional to 52,746.40, 79,130.40 and 17,711.20 is: 26,570.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,746.40 : 79,130.40 = 17,711.20 : x
  2. Step 2: Convert to fraction form
    52,746.40/79,130.40 = 17,711.20/x
  3. Step 3: Cross multiply
    52,746.40x = 79,130.40 × 17,711.20
  4. Step 4: Simplify right side
    52,746.40x = 1,401,494,340.48
  5. Step 5: Solve for x
    x = 1,401,494,340.48/52,746.40
  6. Step 6: Final answer
    x = 26,570.43

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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.