Home / 55,281.76-76,288.80-30,131.28

Finding the Fourth Proportional to 55,281.76, 76,288.80 and 30,131.28

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Solution

The fourth proportional to 55,281.76, 76,288.80 and 30,131.28 is: 41,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,281.76 : 76,288.80 = 30,131.28 : x
  2. Step 2: Convert to fraction form
    55,281.76/76,288.80 = 30,131.28/x
  3. Step 3: Cross multiply
    55,281.76x = 76,288.80 × 30,131.28
  4. Step 4: Simplify right side
    55,281.76x = 2,298,679,193.66
  5. Step 5: Solve for x
    x = 2,298,679,193.66/55,281.76
  6. Step 6: Final answer
    x = 41,581.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.