Home / 83,438.30-115,153.10-47,633.72

Finding the Fourth Proportional to 83,438.30, 115,153.10 and 47,633.72

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Solution

The fourth proportional to 83,438.30, 115,153.10 and 47,633.72 is: 65,739.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.30 : 115,153.10 = 47,633.72 : x
  2. Step 2: Convert to fraction form
    83,438.30/115,153.10 = 47,633.72/x
  3. Step 3: Cross multiply
    83,438.30x = 115,153.10 × 47,633.72
  4. Step 4: Simplify right side
    83,438.30x = 5,485,170,522.53
  5. Step 5: Solve for x
    x = 5,485,170,522.53/83,438.30
  6. Step 6: Final answer
    x = 65,739.24

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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.