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Finding the Fourth Proportional to 72,076.65, 108,114.72 and 19,486.13

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Solution

The fourth proportional to 72,076.65, 108,114.72 and 19,486.13 is: 29,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,076.65 : 108,114.72 = 19,486.13 : x
  2. Step 2: Convert to fraction form
    72,076.65/108,114.72 = 19,486.13/x
  3. Step 3: Cross multiply
    72,076.65x = 108,114.72 × 19,486.13
  4. Step 4: Simplify right side
    72,076.65x = 2,106,736,948.26
  5. Step 5: Solve for x
    x = 2,106,736,948.26/72,076.65
  6. Step 6: Final answer
    x = 29,229.12

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1.5x scale

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.