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Finding the Fourth Proportional to 70,849.04, 97,770.50 and 39,020.90

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Solution

The fourth proportional to 70,849.04, 97,770.50 and 39,020.90 is: 53,848.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,849.04 : 97,770.50 = 39,020.90 : x
  2. Step 2: Convert to fraction form
    70,849.04/97,770.50 = 39,020.90/x
  3. Step 3: Cross multiply
    70,849.04x = 97,770.50 × 39,020.90
  4. Step 4: Simplify right side
    70,849.04x = 3,815,092,903.45
  5. Step 5: Solve for x
    x = 3,815,092,903.45/70,849.04
  6. Step 6: Final answer
    x = 53,848.19

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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.