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Finding the Fourth Proportional to 61,162.80, 91,744.20 and 53,386.80

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Solution

The fourth proportional to 61,162.80, 91,744.20 and 53,386.80 is: 80,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,162.80 : 91,744.20 = 53,386.80 : x
  2. Step 2: Convert to fraction form
    61,162.80/91,744.20 = 53,386.80/x
  3. Step 3: Cross multiply
    61,162.80x = 91,744.20 × 53,386.80
  4. Step 4: Simplify right side
    61,162.80x = 4,897,929,256.56
  5. Step 5: Solve for x
    x = 4,897,929,256.56/61,162.80
  6. Step 6: Final answer
    x = 80,080.20

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1.5x scale

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.