Home / 52,298.31-78,447.47-21,155.43

Finding the Fourth Proportional to 52,298.31, 78,447.47 and 21,155.43

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Solution

The fourth proportional to 52,298.31, 78,447.47 and 21,155.43 is: 31,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,298.31 : 78,447.47 = 21,155.43 : x
  2. Step 2: Convert to fraction form
    52,298.31/78,447.47 = 21,155.43/x
  3. Step 3: Cross multiply
    52,298.31x = 78,447.47 × 21,155.43
  4. Step 4: Simplify right side
    52,298.31x = 1,659,589,854.48
  5. Step 5: Solve for x
    x = 1,659,589,854.48/52,298.31
  6. Step 6: Final answer
    x = 31,733.15

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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.