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Finding the Fourth Proportional to 91,833.12, 137,762.82 and 28,658.90

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Solution

The fourth proportional to 91,833.12, 137,762.82 and 28,658.90 is: 42,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,833.12 : 137,762.82 = 28,658.90 : x
  2. Step 2: Convert to fraction form
    91,833.12/137,762.82 = 28,658.90/x
  3. Step 3: Cross multiply
    91,833.12x = 137,762.82 × 28,658.90
  4. Step 4: Simplify right side
    91,833.12x = 3,948,131,226.51
  5. Step 5: Solve for x
    x = 3,948,131,226.51/91,833.12
  6. Step 6: Final answer
    x = 42,992.45

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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.