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Finding the Fourth Proportional to 79,301.70, 109,407.96 and 45,285.66

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Solution

The fourth proportional to 79,301.70, 109,407.96 and 45,285.66 is: 62,478.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,301.70 : 109,407.96 = 45,285.66 : x
  2. Step 2: Convert to fraction form
    79,301.70/109,407.96 = 45,285.66/x
  3. Step 3: Cross multiply
    79,301.70x = 109,407.96 × 45,285.66
  4. Step 4: Simplify right side
    79,301.70x = 4,954,611,677.85
  5. Step 5: Solve for x
    x = 4,954,611,677.85/79,301.70
  6. Step 6: Final answer
    x = 62,478.00

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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.