Home / 57,712.40-86,568.60-47,870.90

Finding the Fourth Proportional to 57,712.40, 86,568.60 and 47,870.90

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Solution

The fourth proportional to 57,712.40, 86,568.60 and 47,870.90 is: 71,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,712.40 : 86,568.60 = 47,870.90 : x
  2. Step 2: Convert to fraction form
    57,712.40/86,568.60 = 47,870.90/x
  3. Step 3: Cross multiply
    57,712.40x = 86,568.60 × 47,870.90
  4. Step 4: Simplify right side
    57,712.40x = 4,144,116,793.74
  5. Step 5: Solve for x
    x = 4,144,116,793.74/57,712.40
  6. Step 6: Final answer
    x = 71,806.35

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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.