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Finding the Fourth Proportional to 94,672.40, 142,008.60 and 47,919.20

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Solution

The fourth proportional to 94,672.40, 142,008.60 and 47,919.20 is: 71,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,672.40 : 142,008.60 = 47,919.20 : x
  2. Step 2: Convert to fraction form
    94,672.40/142,008.60 = 47,919.20/x
  3. Step 3: Cross multiply
    94,672.40x = 142,008.60 × 47,919.20
  4. Step 4: Simplify right side
    94,672.40x = 6,804,938,505.12
  5. Step 5: Solve for x
    x = 6,804,938,505.12/94,672.40
  6. Step 6: Final answer
    x = 71,878.80

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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.