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Finding the Fourth Proportional to 77,612.57, 116,418.85 and 22,208.57

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Solution

The fourth proportional to 77,612.57, 116,418.85 and 22,208.57 is: 33,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,612.57 : 116,418.85 = 22,208.57 : x
  2. Step 2: Convert to fraction form
    77,612.57/116,418.85 = 22,208.57/x
  3. Step 3: Cross multiply
    77,612.57x = 116,418.85 × 22,208.57
  4. Step 4: Simplify right side
    77,612.57x = 2,585,495,597.45
  5. Step 5: Solve for x
    x = 2,585,495,597.45/77,612.57
  6. Step 6: Final answer
    x = 33,312.85

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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.