Home / 78,052.84-117,079.27-18,888.52

Finding the Fourth Proportional to 78,052.84, 117,079.27 and 18,888.52

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Solution

The fourth proportional to 78,052.84, 117,079.27 and 18,888.52 is: 28,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,052.84 : 117,079.27 = 18,888.52 : x
  2. Step 2: Convert to fraction form
    78,052.84/117,079.27 = 18,888.52/x
  3. Step 3: Cross multiply
    78,052.84x = 117,079.27 × 18,888.52
  4. Step 4: Simplify right side
    78,052.84x = 2,211,454,132.98
  5. Step 5: Solve for x
    x = 2,211,454,132.98/78,052.84
  6. Step 6: Final answer
    x = 28,332.78

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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.