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Finding the Fourth Proportional to 79,630.49, 109,890.90 and 45,638.24

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Solution

The fourth proportional to 79,630.49, 109,890.90 and 45,638.24 is: 62,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,630.49 : 109,890.90 = 45,638.24 : x
  2. Step 2: Convert to fraction form
    79,630.49/109,890.90 = 45,638.24/x
  3. Step 3: Cross multiply
    79,630.49x = 109,890.90 × 45,638.24
  4. Step 4: Simplify right side
    79,630.49x = 5,015,227,268.02
  5. Step 5: Solve for x
    x = 5,015,227,268.02/79,630.49
  6. Step 6: Final answer
    x = 62,981.24

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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.