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Finding the Fourth Proportional to 91,630.21, 137,466.84 and 28,447.11

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Solution

The fourth proportional to 91,630.21, 137,466.84 and 28,447.11 is: 42,677.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,630.21 : 137,466.84 = 28,447.11 : x
  2. Step 2: Convert to fraction form
    91,630.21/137,466.84 = 28,447.11/x
  3. Step 3: Cross multiply
    91,630.21x = 137,466.84 × 28,447.11
  4. Step 4: Simplify right side
    91,630.21x = 3,910,534,318.83
  5. Step 5: Solve for x
    x = 3,910,534,318.83/91,630.21
  6. Step 6: Final answer
    x = 42,677.35

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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.