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Finding the Fourth Proportional to 70,999.62, 98,038.44 and 63,432.60

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Solution

The fourth proportional to 70,999.62, 98,038.44 and 63,432.60 is: 87,589.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.62 : 98,038.44 = 63,432.60 : x
  2. Step 2: Convert to fraction form
    70,999.62/98,038.44 = 63,432.60/x
  3. Step 3: Cross multiply
    70,999.62x = 98,038.44 × 63,432.60
  4. Step 4: Simplify right side
    70,999.62x = 6,218,833,149.14
  5. Step 5: Solve for x
    x = 6,218,833,149.14/70,999.62
  6. Step 6: Final answer
    x = 87,589.67

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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.