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Finding the Fourth Proportional to 83,630.34, 115,409.70 and 45,903.78

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Solution

The fourth proportional to 83,630.34, 115,409.70 and 45,903.78 is: 63,347.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,630.34 : 115,409.70 = 45,903.78 : x
  2. Step 2: Convert to fraction form
    83,630.34/115,409.70 = 45,903.78/x
  3. Step 3: Cross multiply
    83,630.34x = 115,409.70 × 45,903.78
  4. Step 4: Simplify right side
    83,630.34x = 5,297,741,478.67
  5. Step 5: Solve for x
    x = 5,297,741,478.67/83,630.34
  6. Step 6: Final answer
    x = 63,347.12

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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.