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Finding the Fourth Proportional to 70,106, 96,754.76 and 39,898.66

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Solution

The fourth proportional to 70,106, 96,754.76 and 39,898.66 is: 55,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,106 : 96,754.76 = 39,898.66 : x
  2. Step 2: Convert to fraction form
    70,106/96,754.76 = 39,898.66/x
  3. Step 3: Cross multiply
    70,106x = 96,754.76 × 39,898.66
  4. Step 4: Simplify right side
    70,106x = 3,860,385,272.62
  5. Step 5: Solve for x
    x = 3,860,385,272.62/70,106
  6. Step 6: Final answer
    x = 55,064.98

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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.