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Finding the Fourth Proportional to 91,730.77, 137,578.76 and 28,551.68

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Solution

The fourth proportional to 91,730.77, 137,578.76 and 28,551.68 is: 42,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,730.77 : 137,578.76 = 28,551.68 : x
  2. Step 2: Convert to fraction form
    91,730.77/137,578.76 = 28,551.68/x
  3. Step 3: Cross multiply
    91,730.77x = 137,578.76 × 28,551.68
  4. Step 4: Simplify right side
    91,730.77x = 3,928,104,522.65
  5. Step 5: Solve for x
    x = 3,928,104,522.65/91,730.77
  6. Step 6: Final answer
    x = 42,822.10

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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.