Home / 57,543.75-86,309.47-15,428.05

Finding the Fourth Proportional to 57,543.75, 86,309.47 and 15,428.05

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Solution

The fourth proportional to 57,543.75, 86,309.47 and 15,428.05 is: 23,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,543.75 : 86,309.47 = 15,428.05 : x
  2. Step 2: Convert to fraction form
    57,543.75/86,309.47 = 15,428.05/x
  3. Step 3: Cross multiply
    57,543.75x = 86,309.47 × 15,428.05
  4. Step 4: Simplify right side
    57,543.75x = 1,331,586,818.63
  5. Step 5: Solve for x
    x = 1,331,586,818.63/57,543.75
  6. Step 6: Final answer
    x = 23,140.42

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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.