Home / 78,577.02-117,869.42-22,425.40

Finding the Fourth Proportional to 78,577.02, 117,869.42 and 22,425.40

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Solution

The fourth proportional to 78,577.02, 117,869.42 and 22,425.40 is: 33,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577.02 : 117,869.42 = 22,425.40 : x
  2. Step 2: Convert to fraction form
    78,577.02/117,869.42 = 22,425.40/x
  3. Step 3: Cross multiply
    78,577.02x = 117,869.42 × 22,425.40
  4. Step 4: Simplify right side
    78,577.02x = 2,643,268,891.27
  5. Step 5: Solve for x
    x = 2,643,268,891.27/78,577.02
  6. Step 6: Final answer
    x = 33,639.21

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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.