Home / 81,752.92-112,799.32-47,742.10

Finding the Fourth Proportional to 81,752.92, 112,799.32 and 47,742.10

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Solution

The fourth proportional to 81,752.92, 112,799.32 and 47,742.10 is: 65,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,752.92 : 112,799.32 = 47,742.10 : x
  2. Step 2: Convert to fraction form
    81,752.92/112,799.32 = 47,742.10/x
  3. Step 3: Cross multiply
    81,752.92x = 112,799.32 × 47,742.10
  4. Step 4: Simplify right side
    81,752.92x = 5,385,276,415.37
  5. Step 5: Solve for x
    x = 5,385,276,415.37/81,752.92
  6. Step 6: Final answer
    x = 65,872.59

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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.