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Finding the Fourth Proportional to 72,278.53, 108,404.73 and 19,675.71

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Solution

The fourth proportional to 72,278.53, 108,404.73 and 19,675.71 is: 29,510.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,278.53 : 108,404.73 = 19,675.71 : x
  2. Step 2: Convert to fraction form
    72,278.53/108,404.73 = 19,675.71/x
  3. Step 3: Cross multiply
    72,278.53x = 108,404.73 × 19,675.71
  4. Step 4: Simplify right side
    72,278.53x = 2,132,940,030.11
  5. Step 5: Solve for x
    x = 2,132,940,030.11/72,278.53
  6. Step 6: Final answer
    x = 29,510.01

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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.