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Finding the Fourth Proportional to 71,473.45, 98,626.35 and 39,641.71

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Solution

The fourth proportional to 71,473.45, 98,626.35 and 39,641.71 is: 54,701.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,473.45 : 98,626.35 = 39,641.71 : x
  2. Step 2: Convert to fraction form
    71,473.45/98,626.35 = 39,641.71/x
  3. Step 3: Cross multiply
    71,473.45x = 98,626.35 × 39,641.71
  4. Step 4: Simplify right side
    71,473.45x = 3,909,717,165.06
  5. Step 5: Solve for x
    x = 3,909,717,165.06/71,473.45
  6. Step 6: Final answer
    x = 54,701.67

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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.