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Finding the Fourth Proportional to 72,110.90, 108,103.70 and 34,652.18

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Solution

The fourth proportional to 72,110.90, 108,103.70 and 34,652.18 is: 51,948.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,110.90 : 108,103.70 = 34,652.18 : x
  2. Step 2: Convert to fraction form
    72,110.90/108,103.70 = 34,652.18/x
  3. Step 3: Cross multiply
    72,110.90x = 108,103.70 × 34,652.18
  4. Step 4: Simplify right side
    72,110.90x = 3,746,028,871.07
  5. Step 5: Solve for x
    x = 3,746,028,871.07/72,110.90
  6. Step 6: Final answer
    x = 51,948.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.