Home / 78,281.19-117,428.93-22,122.11

Finding the Fourth Proportional to 78,281.19, 117,428.93 and 22,122.11

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Solution

The fourth proportional to 78,281.19, 117,428.93 and 22,122.11 is: 33,185.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,281.19 : 117,428.93 = 22,122.11 : x
  2. Step 2: Convert to fraction form
    78,281.19/117,428.93 = 22,122.11/x
  3. Step 3: Cross multiply
    78,281.19x = 117,428.93 × 22,122.11
  4. Step 4: Simplify right side
    78,281.19x = 2,597,775,706.64
  5. Step 5: Solve for x
    x = 2,597,775,706.64/78,281.19
  6. Step 6: Final answer
    x = 33,185.18

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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.