Home / 57,139.63-85,734.05-30,839.13

Finding the Fourth Proportional to 57,139.63, 85,734.05 and 30,839.13

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Solution

The fourth proportional to 57,139.63, 85,734.05 and 30,839.13 is: 46,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,139.63 : 85,734.05 = 30,839.13 : x
  2. Step 2: Convert to fraction form
    57,139.63/85,734.05 = 30,839.13/x
  3. Step 3: Cross multiply
    57,139.63x = 85,734.05 × 30,839.13
  4. Step 4: Simplify right side
    57,139.63x = 2,643,963,359.18
  5. Step 5: Solve for x
    x = 2,643,963,359.18/57,139.63
  6. Step 6: Final answer
    x = 46,271.97

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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.