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Finding the Fourth Proportional to 78,508.84, 117,745.57 and 22,347.71

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Solution

The fourth proportional to 78,508.84, 117,745.57 and 22,347.71 is: 33,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,508.84 : 117,745.57 = 22,347.71 : x
  2. Step 2: Convert to fraction form
    78,508.84/117,745.57 = 22,347.71/x
  3. Step 3: Cross multiply
    78,508.84x = 117,745.57 × 22,347.71
  4. Step 4: Simplify right side
    78,508.84x = 2,631,343,207.55
  5. Step 5: Solve for x
    x = 2,631,343,207.55/78,508.84
  6. Step 6: Final answer
    x = 33,516.52

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1.5x scale

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.