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Finding the Fourth Proportional to 72,518.46, 108,774.95 and 19,926.57

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Solution

The fourth proportional to 72,518.46, 108,774.95 and 19,926.57 is: 29,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,518.46 : 108,774.95 = 19,926.57 : x
  2. Step 2: Convert to fraction form
    72,518.46/108,774.95 = 19,926.57/x
  3. Step 3: Cross multiply
    72,518.46x = 108,774.95 × 19,926.57
  4. Step 4: Simplify right side
    72,518.46x = 2,167,511,555.79
  5. Step 5: Solve for x
    x = 2,167,511,555.79/72,518.46
  6. Step 6: Final answer
    x = 29,889.10

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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.