Home / 47,929.80-71,894.70-30,215.10

Finding the Fourth Proportional to 47,929.80, 71,894.70 and 30,215.10

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Solution

The fourth proportional to 47,929.80, 71,894.70 and 30,215.10 is: 45,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,929.80 : 71,894.70 = 30,215.10 : x
  2. Step 2: Convert to fraction form
    47,929.80/71,894.70 = 30,215.10/x
  3. Step 3: Cross multiply
    47,929.80x = 71,894.70 × 30,215.10
  4. Step 4: Simplify right side
    47,929.80x = 2,172,305,549.97
  5. Step 5: Solve for x
    x = 2,172,305,549.97/47,929.80
  6. Step 6: Final answer
    x = 45,322.65

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1.5x scale

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.