Home / 40,818.90-61,261.14-21,103.20

Finding the Fourth Proportional to 40,818.90, 61,261.14 and 21,103.20

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Solution

The fourth proportional to 40,818.90, 61,261.14 and 21,103.20 is: 31,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,818.90 : 61,261.14 = 21,103.20 : x
  2. Step 2: Convert to fraction form
    40,818.90/61,261.14 = 21,103.20/x
  3. Step 3: Cross multiply
    40,818.90x = 61,261.14 × 21,103.20
  4. Step 4: Simplify right side
    40,818.90x = 1,292,806,089.65
  5. Step 5: Solve for x
    x = 1,292,806,089.65/40,818.90
  6. Step 6: Final answer
    x = 31,671.75

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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.