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Finding the Fourth Proportional to 60,897, 91,357.02 and 28,065

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Solution

The fourth proportional to 60,897, 91,357.02 and 28,065 is: 42,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,897 : 91,357.02 = 28,065 : x
  2. Step 2: Convert to fraction form
    60,897/91,357.02 = 28,065/x
  3. Step 3: Cross multiply
    60,897x = 91,357.02 × 28,065
  4. Step 4: Simplify right side
    60,897x = 2,563,934,766.30
  5. Step 5: Solve for x
    x = 2,563,934,766.30/60,897
  6. Step 6: Final answer
    x = 42,102.81

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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.