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Finding the Fourth Proportional to 83,865, 115,733.70 and 46,138.44

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Solution

The fourth proportional to 83,865, 115,733.70 and 46,138.44 is: 63,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,865 : 115,733.70 = 46,138.44 : x
  2. Step 2: Convert to fraction form
    83,865/115,733.70 = 46,138.44/x
  3. Step 3: Cross multiply
    83,865x = 115,733.70 × 46,138.44
  4. Step 4: Simplify right side
    83,865x = 5,339,772,373.43
  5. Step 5: Solve for x
    x = 5,339,772,373.43/83,865
  6. Step 6: Final answer
    x = 63,671.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.