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Finding the Fourth Proportional to 71,463.81, 98,617.57 and 39,635.67

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Solution

The fourth proportional to 71,463.81, 98,617.57 and 39,635.67 is: 54,695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.81 : 98,617.57 = 39,635.67 : x
  2. Step 2: Convert to fraction form
    71,463.81/98,617.57 = 39,635.67/x
  3. Step 3: Cross multiply
    71,463.81x = 98,617.57 × 39,635.67
  4. Step 4: Simplify right side
    71,463.81x = 3,908,772,769.46
  5. Step 5: Solve for x
    x = 3,908,772,769.46/71,463.81
  6. Step 6: Final answer
    x = 54,695.84

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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.