Home / 77,640.02-107,147.03-43,659.21

Finding the Fourth Proportional to 77,640.02, 107,147.03 and 43,659.21

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Solution

The fourth proportional to 77,640.02, 107,147.03 and 43,659.21 is: 60,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,640.02 : 107,147.03 = 43,659.21 : x
  2. Step 2: Convert to fraction form
    77,640.02/107,147.03 = 43,659.21/x
  3. Step 3: Cross multiply
    77,640.02x = 107,147.03 × 43,659.21
  4. Step 4: Simplify right side
    77,640.02x = 4,677,953,929.62
  5. Step 5: Solve for x
    x = 4,677,953,929.62/77,640.02
  6. Step 6: Final answer
    x = 60,251.84

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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.