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Finding the Fourth Proportional to 78,818.88, 118,224.72 and 19,652.88

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Solution

The fourth proportional to 78,818.88, 118,224.72 and 19,652.88 is: 29,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,818.88 : 118,224.72 = 19,652.88 : x
  2. Step 2: Convert to fraction form
    78,818.88/118,224.72 = 19,652.88/x
  3. Step 3: Cross multiply
    78,818.88x = 118,224.72 × 19,652.88
  4. Step 4: Simplify right side
    78,818.88x = 2,323,456,235.19
  5. Step 5: Solve for x
    x = 2,323,456,235.19/78,818.88
  6. Step 6: Final answer
    x = 29,478.42

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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.