Home / 55,638.75-76,781.51-30,488.25

Finding the Fourth Proportional to 55,638.75, 76,781.51 and 30,488.25

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Solution

The fourth proportional to 55,638.75, 76,781.51 and 30,488.25 is: 42,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,638.75 : 76,781.51 = 30,488.25 : x
  2. Step 2: Convert to fraction form
    55,638.75/76,781.51 = 30,488.25/x
  3. Step 3: Cross multiply
    55,638.75x = 76,781.51 × 30,488.25
  4. Step 4: Simplify right side
    55,638.75x = 2,340,933,719.82
  5. Step 5: Solve for x
    x = 2,340,933,719.82/55,638.75
  6. Step 6: Final answer
    x = 42,073.80

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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.