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Finding the Fourth Proportional to 72,501.98, 108,732.09 and 19,913.18

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Solution

The fourth proportional to 72,501.98, 108,732.09 and 19,913.18 is: 29,864.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501.98 : 108,732.09 = 19,913.18 : x
  2. Step 2: Convert to fraction form
    72,501.98/108,732.09 = 19,913.18/x
  3. Step 3: Cross multiply
    72,501.98x = 108,732.09 × 19,913.18
  4. Step 4: Simplify right side
    72,501.98x = 2,165,201,679.95
  5. Step 5: Solve for x
    x = 2,165,201,679.95/72,501.98
  6. Step 6: Final answer
    x = 29,864.04

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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.