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Finding the Fourth Proportional to 141,775.28, 212,690.88 and 40,574.28

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Solution

The fourth proportional to 141,775.28, 212,690.88 and 40,574.28 is: 60,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,775.28 : 212,690.88 = 40,574.28 : x
  2. Step 2: Convert to fraction form
    141,775.28/212,690.88 = 40,574.28/x
  3. Step 3: Cross multiply
    141,775.28x = 212,690.88 × 40,574.28
  4. Step 4: Simplify right side
    141,775.28x = 8,629,779,318.57
  5. Step 5: Solve for x
    x = 8,629,779,318.57/141,775.28
  6. Step 6: Final answer
    x = 60,869.42

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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.