Home / 78,857.68-108,822-43,047.58

Finding the Fourth Proportional to 78,857.68, 108,822 and 43,047.58

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Solution

The fourth proportional to 78,857.68, 108,822 and 43,047.58 is: 59,404.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,857.68 : 108,822 = 43,047.58 : x
  2. Step 2: Convert to fraction form
    78,857.68/108,822 = 43,047.58/x
  3. Step 3: Cross multiply
    78,857.68x = 108,822 × 43,047.58
  4. Step 4: Simplify right side
    78,857.68x = 4,684,523,750.76
  5. Step 5: Solve for x
    x = 4,684,523,750.76/78,857.68
  6. Step 6: Final answer
    x = 59,404.79

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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.