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Finding the Fourth Proportional to 71,005.78, 98,019.12 and 47,152.90

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Solution

The fourth proportional to 71,005.78, 98,019.12 and 47,152.90 is: 65,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,005.78 : 98,019.12 = 47,152.90 : x
  2. Step 2: Convert to fraction form
    71,005.78/98,019.12 = 47,152.90/x
  3. Step 3: Cross multiply
    71,005.78x = 98,019.12 × 47,152.90
  4. Step 4: Simplify right side
    71,005.78x = 4,621,885,763.45
  5. Step 5: Solve for x
    x = 4,621,885,763.45/71,005.78
  6. Step 6: Final answer
    x = 65,091.68

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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.