Home / 57,063-78,747.21-31,912.50

Finding the Fourth Proportional to 57,063, 78,747.21 and 31,912.50

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Solution

The fourth proportional to 57,063, 78,747.21 and 31,912.50 is: 44,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,063 : 78,747.21 = 31,912.50 : x
  2. Step 2: Convert to fraction form
    57,063/78,747.21 = 31,912.50/x
  3. Step 3: Cross multiply
    57,063x = 78,747.21 × 31,912.50
  4. Step 4: Simplify right side
    57,063x = 2,513,020,339.13
  5. Step 5: Solve for x
    x = 2,513,020,339.13/57,063
  6. Step 6: Final answer
    x = 44,039.40

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1.5x scale

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.