Home / 57,681.20-86,570.40-26,139.80

Finding the Fourth Proportional to 57,681.20, 86,570.40 and 26,139.80

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Solution

The fourth proportional to 57,681.20, 86,570.40 and 26,139.80 is: 39,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,681.20 : 86,570.40 = 26,139.80 : x
  2. Step 2: Convert to fraction form
    57,681.20/86,570.40 = 26,139.80/x
  3. Step 3: Cross multiply
    57,681.20x = 86,570.40 × 26,139.80
  4. Step 4: Simplify right side
    57,681.20x = 2,262,932,941.92
  5. Step 5: Solve for x
    x = 2,262,932,941.92/57,681.20
  6. Step 6: Final answer
    x = 39,231.72

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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.