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Finding the Fourth Proportional to 77,882.01, 117,034.08 and 42,369.57

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Solution

The fourth proportional to 77,882.01, 117,034.08 and 42,369.57 is: 63,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,882.01 : 117,034.08 = 42,369.57 : x
  2. Step 2: Convert to fraction form
    77,882.01/117,034.08 = 42,369.57/x
  3. Step 3: Cross multiply
    77,882.01x = 117,034.08 × 42,369.57
  4. Step 4: Simplify right side
    77,882.01x = 4,958,683,644.95
  5. Step 5: Solve for x
    x = 4,958,683,644.95/77,882.01
  6. Step 6: Final answer
    x = 63,669.18

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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.