Home / 78,621.47-108,497.55-42,811.73

Finding the Fourth Proportional to 78,621.47, 108,497.55 and 42,811.73

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Solution

The fourth proportional to 78,621.47, 108,497.55 and 42,811.73 is: 59,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621.47 : 108,497.55 = 42,811.73 : x
  2. Step 2: Convert to fraction form
    78,621.47/108,497.55 = 42,811.73/x
  3. Step 3: Cross multiply
    78,621.47x = 108,497.55 × 42,811.73
  4. Step 4: Simplify right side
    78,621.47x = 4,644,967,816.26
  5. Step 5: Solve for x
    x = 4,644,967,816.26/78,621.47
  6. Step 6: Final answer
    x = 59,080.14

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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.