Home / 55,280.88-76,289.40-31,407.12

Finding the Fourth Proportional to 55,280.88, 76,289.40 and 31,407.12

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Solution

The fourth proportional to 55,280.88, 76,289.40 and 31,407.12 is: 43,342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,280.88 : 76,289.40 = 31,407.12 : x
  2. Step 2: Convert to fraction form
    55,280.88/76,289.40 = 31,407.12/x
  3. Step 3: Cross multiply
    55,280.88x = 76,289.40 × 31,407.12
  4. Step 4: Simplify right side
    55,280.88x = 2,396,030,340.53
  5. Step 5: Solve for x
    x = 2,396,030,340.53/55,280.88
  6. Step 6: Final answer
    x = 43,342.84

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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.