Home / 78,578.02-117,870.92-22,426.41

Finding the Fourth Proportional to 78,578.02, 117,870.92 and 22,426.41

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Solution

The fourth proportional to 78,578.02, 117,870.92 and 22,426.41 is: 33,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,578.02 : 117,870.92 = 22,426.41 : x
  2. Step 2: Convert to fraction form
    78,578.02/117,870.92 = 22,426.41/x
  3. Step 3: Cross multiply
    78,578.02x = 117,870.92 × 22,426.41
  4. Step 4: Simplify right side
    78,578.02x = 2,643,420,877.51
  5. Step 5: Solve for x
    x = 2,643,420,877.51/78,578.02
  6. Step 6: Final answer
    x = 33,640.72

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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.