Home / 56,862.47-78,387.14-39,812.99

Finding the Fourth Proportional to 56,862.47, 78,387.14 and 39,812.99

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Solution

The fourth proportional to 56,862.47, 78,387.14 and 39,812.99 is: 54,883.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,862.47 : 78,387.14 = 39,812.99 : x
  2. Step 2: Convert to fraction form
    56,862.47/78,387.14 = 39,812.99/x
  3. Step 3: Cross multiply
    56,862.47x = 78,387.14 × 39,812.99
  4. Step 4: Simplify right side
    56,862.47x = 3,120,826,128.55
  5. Step 5: Solve for x
    x = 3,120,826,128.55/56,862.47
  6. Step 6: Final answer
    x = 54,883.76

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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.