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Finding the Fourth Proportional to 75,287.56, 112,928.10 and 30,916.84

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Solution

The fourth proportional to 75,287.56, 112,928.10 and 30,916.84 is: 46,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,287.56 : 112,928.10 = 30,916.84 : x
  2. Step 2: Convert to fraction form
    75,287.56/112,928.10 = 30,916.84/x
  3. Step 3: Cross multiply
    75,287.56x = 112,928.10 × 30,916.84
  4. Step 4: Simplify right side
    75,287.56x = 3,491,379,999.20
  5. Step 5: Solve for x
    x = 3,491,379,999.20/75,287.56
  6. Step 6: Final answer
    x = 46,373.93

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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.