Home / 55,876.90-77,109.24-30,383.78

Finding the Fourth Proportional to 55,876.90, 77,109.24 and 30,383.78

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Solution

The fourth proportional to 55,876.90, 77,109.24 and 30,383.78 is: 41,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,876.90 : 77,109.24 = 30,383.78 : x
  2. Step 2: Convert to fraction form
    55,876.90/77,109.24 = 30,383.78/x
  3. Step 3: Cross multiply
    55,876.90x = 77,109.24 × 30,383.78
  4. Step 4: Simplify right side
    55,876.90x = 2,342,870,184.13
  5. Step 5: Solve for x
    x = 2,342,870,184.13/55,876.90
  6. Step 6: Final answer
    x = 41,929.14

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1.5x scale

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.