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Finding the Fourth Proportional to 74,805.77, 112,111.70 and 30,380.91

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Solution

The fourth proportional to 74,805.77, 112,111.70 and 30,380.91 is: 45,531.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,805.77 : 112,111.70 = 30,380.91 : x
  2. Step 2: Convert to fraction form
    74,805.77/112,111.70 = 30,380.91/x
  3. Step 3: Cross multiply
    74,805.77x = 112,111.70 × 30,380.91
  4. Step 4: Simplify right side
    74,805.77x = 3,406,055,467.65
  5. Step 5: Solve for x
    x = 3,406,055,467.65/74,805.77
  6. Step 6: Final answer
    x = 45,531.99

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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.