Home / 40,726.80-61,090.20-28,285.20

Finding the Fourth Proportional to 40,726.80, 61,090.20 and 28,285.20

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Solution

The fourth proportional to 40,726.80, 61,090.20 and 28,285.20 is: 42,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,726.80 : 61,090.20 = 28,285.20 : x
  2. Step 2: Convert to fraction form
    40,726.80/61,090.20 = 28,285.20/x
  3. Step 3: Cross multiply
    40,726.80x = 61,090.20 × 28,285.20
  4. Step 4: Simplify right side
    40,726.80x = 1,727,948,525.04
  5. Step 5: Solve for x
    x = 1,727,948,525.04/40,726.80
  6. Step 6: Final answer
    x = 42,427.80

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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.