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Finding the Fourth Proportional to 78,293.42, 117,440.12 and 22,889.42

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Solution

The fourth proportional to 78,293.42, 117,440.12 and 22,889.42 is: 34,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,293.42 : 117,440.12 = 22,889.42 : x
  2. Step 2: Convert to fraction form
    78,293.42/117,440.12 = 22,889.42/x
  3. Step 3: Cross multiply
    78,293.42x = 117,440.12 × 22,889.42
  4. Step 4: Simplify right side
    78,293.42x = 2,688,135,701.55
  5. Step 5: Solve for x
    x = 2,688,135,701.55/78,293.42
  6. Step 6: Final answer
    x = 34,334.12

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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.