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Finding the Fourth Proportional to 78,293.79, 117,440.69 and 22,889.79

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Solution

The fourth proportional to 78,293.79, 117,440.69 and 22,889.79 is: 34,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,293.79 : 117,440.69 = 22,889.79 : x
  2. Step 2: Convert to fraction form
    78,293.79/117,440.69 = 22,889.79/x
  3. Step 3: Cross multiply
    78,293.79x = 117,440.69 × 22,889.79
  4. Step 4: Simplify right side
    78,293.79x = 2,688,192,617.11
  5. Step 5: Solve for x
    x = 2,688,192,617.11/78,293.79
  6. Step 6: Final answer
    x = 34,334.69

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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.