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Finding the Fourth Proportional to 72,510.84, 108,787.32 and 25,767.36

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Solution

The fourth proportional to 72,510.84, 108,787.32 and 25,767.36 is: 38,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,510.84 : 108,787.32 = 25,767.36 : x
  2. Step 2: Convert to fraction form
    72,510.84/108,787.32 = 25,767.36/x
  3. Step 3: Cross multiply
    72,510.84x = 108,787.32 × 25,767.36
  4. Step 4: Simplify right side
    72,510.84x = 2,803,162,037.88
  5. Step 5: Solve for x
    x = 2,803,162,037.88/72,510.84
  6. Step 6: Final answer
    x = 38,658.52

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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.