Home / 81,708.32-112,737.60-47,697.43

Finding the Fourth Proportional to 81,708.32, 112,737.60 and 47,697.43

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Solution

The fourth proportional to 81,708.32, 112,737.60 and 47,697.43 is: 65,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,708.32 : 112,737.60 = 47,697.43 : x
  2. Step 2: Convert to fraction form
    81,708.32/112,737.60 = 47,697.43/x
  3. Step 3: Cross multiply
    81,708.32x = 112,737.60 × 47,697.43
  4. Step 4: Simplify right side
    81,708.32x = 5,377,293,784.37
  5. Step 5: Solve for x
    x = 5,377,293,784.37/81,708.32
  6. Step 6: Final answer
    x = 65,810.85

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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.