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Finding the Fourth Proportional to 83,446.63, 115,155.85 and 45,206.90

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Solution

The fourth proportional to 83,446.63, 115,155.85 and 45,206.90 is: 62,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,446.63 : 115,155.85 = 45,206.90 : x
  2. Step 2: Convert to fraction form
    83,446.63/115,155.85 = 45,206.90/x
  3. Step 3: Cross multiply
    83,446.63x = 115,155.85 × 45,206.90
  4. Step 4: Simplify right side
    83,446.63x = 5,205,838,995.37
  5. Step 5: Solve for x
    x = 5,205,838,995.37/83,446.63
  6. Step 6: Final answer
    x = 62,385.25

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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.