Home / 57,280.17-85,927.80-21,251.72

Finding the Fourth Proportional to 57,280.17, 85,927.80 and 21,251.72

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Solution

The fourth proportional to 57,280.17, 85,927.80 and 21,251.72 is: 31,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,280.17 : 85,927.80 = 21,251.72 : x
  2. Step 2: Convert to fraction form
    57,280.17/85,927.80 = 21,251.72/x
  3. Step 3: Cross multiply
    57,280.17x = 85,927.80 × 21,251.72
  4. Step 4: Simplify right side
    57,280.17x = 1,826,113,626.66
  5. Step 5: Solve for x
    x = 1,826,113,626.66/57,280.17
  6. Step 6: Final answer
    x = 31,880.38

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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.