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Finding the Fourth Proportional to 72,888.93, 109,267.79 and 26,130.87

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Solution

The fourth proportional to 72,888.93, 109,267.79 and 26,130.87 is: 39,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,888.93 : 109,267.79 = 26,130.87 : x
  2. Step 2: Convert to fraction form
    72,888.93/109,267.79 = 26,130.87/x
  3. Step 3: Cross multiply
    72,888.93x = 109,267.79 × 26,130.87
  4. Step 4: Simplify right side
    72,888.93x = 2,855,262,285.02
  5. Step 5: Solve for x
    x = 2,855,262,285.02/72,888.93
  6. Step 6: Final answer
    x = 39,172.78

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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.