Home / 39,419.95-59,045.85-31,891.20

Finding the Fourth Proportional to 39,419.95, 59,045.85 and 31,891.20

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Solution

The fourth proportional to 39,419.95, 59,045.85 and 31,891.20 is: 47,768.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,419.95 : 59,045.85 = 31,891.20 : x
  2. Step 2: Convert to fraction form
    39,419.95/59,045.85 = 31,891.20/x
  3. Step 3: Cross multiply
    39,419.95x = 59,045.85 × 31,891.20
  4. Step 4: Simplify right side
    39,419.95x = 1,883,043,011.52
  5. Step 5: Solve for x
    x = 1,883,043,011.52/39,419.95
  6. Step 6: Final answer
    x = 47,768.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.