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Finding the Fourth Proportional to 91,464.84, 137,201.70 and 28,328.52

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Solution

The fourth proportional to 91,464.84, 137,201.70 and 28,328.52 is: 42,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,464.84 : 137,201.70 = 28,328.52 : x
  2. Step 2: Convert to fraction form
    91,464.84/137,201.70 = 28,328.52/x
  3. Step 3: Cross multiply
    91,464.84x = 137,201.70 × 28,328.52
  4. Step 4: Simplify right side
    91,464.84x = 3,886,721,102.48
  5. Step 5: Solve for x
    x = 3,886,721,102.48/91,464.84
  6. Step 6: Final answer
    x = 42,494.16

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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.