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Finding the Fourth Proportional to 71,155.84, 98,080.96 and 48,178.40

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Solution

The fourth proportional to 71,155.84, 98,080.96 and 48,178.40 is: 66,408.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,155.84 : 98,080.96 = 48,178.40 : x
  2. Step 2: Convert to fraction form
    71,155.84/98,080.96 = 48,178.40/x
  3. Step 3: Cross multiply
    71,155.84x = 98,080.96 × 48,178.40
  4. Step 4: Simplify right side
    71,155.84x = 4,725,383,723.26
  5. Step 5: Solve for x
    x = 4,725,383,723.26/71,155.84
  6. Step 6: Final answer
    x = 66,408.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.