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Finding the Fourth Proportional to 79,683.48, 109,948.19 and 49,476.15

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Solution

The fourth proportional to 79,683.48, 109,948.19 and 49,476.15 is: 68,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,683.48 : 109,948.19 = 49,476.15 : x
  2. Step 2: Convert to fraction form
    79,683.48/109,948.19 = 49,476.15/x
  3. Step 3: Cross multiply
    79,683.48x = 109,948.19 × 49,476.15
  4. Step 4: Simplify right side
    79,683.48x = 5,439,812,893.29
  5. Step 5: Solve for x
    x = 5,439,812,893.29/79,683.48
  6. Step 6: Final answer
    x = 68,267.76

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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.