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Finding the Fourth Proportional to 70,642.83, 97,487.04 and 38,811.66

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Solution

The fourth proportional to 70,642.83, 97,487.04 and 38,811.66 is: 53,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,642.83 : 97,487.04 = 38,811.66 : x
  2. Step 2: Convert to fraction form
    70,642.83/97,487.04 = 38,811.66/x
  3. Step 3: Cross multiply
    70,642.83x = 97,487.04 × 38,811.66
  4. Step 4: Simplify right side
    70,642.83x = 3,783,633,630.85
  5. Step 5: Solve for x
    x = 3,783,633,630.85/70,642.83
  6. Step 6: Final answer
    x = 53,560.05

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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.