Home / 71,921.12-99,221.90-47,733.44

Finding the Fourth Proportional to 71,921.12, 99,221.90 and 47,733.44

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Solution

The fourth proportional to 71,921.12, 99,221.90 and 47,733.44 is: 65,852.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,921.12 : 99,221.90 = 47,733.44 : x
  2. Step 2: Convert to fraction form
    71,921.12/99,221.90 = 47,733.44/x
  3. Step 3: Cross multiply
    71,921.12x = 99,221.90 × 47,733.44
  4. Step 4: Simplify right side
    71,921.12x = 4,736,201,875.56
  5. Step 5: Solve for x
    x = 4,736,201,875.56/71,921.12
  6. Step 6: Final answer
    x = 65,852.73

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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.