Home / 55,655.97-76,807.20-39,778.35

Finding the Fourth Proportional to 55,655.97, 76,807.20 and 39,778.35

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Solution

The fourth proportional to 55,655.97, 76,807.20 and 39,778.35 is: 54,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,655.97 : 76,807.20 = 39,778.35 : x
  2. Step 2: Convert to fraction form
    55,655.97/76,807.20 = 39,778.35/x
  3. Step 3: Cross multiply
    55,655.97x = 76,807.20 × 39,778.35
  4. Step 4: Simplify right side
    55,655.97x = 3,055,263,684.12
  5. Step 5: Solve for x
    x = 3,055,263,684.12/55,655.97
  6. Step 6: Final answer
    x = 54,895.52

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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.