Home / 71,968.80-99,316.64-39,705.42

Finding the Fourth Proportional to 71,968.80, 99,316.64 and 39,705.42

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Solution

The fourth proportional to 71,968.80, 99,316.64 and 39,705.42 is: 54,793.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,968.80 : 99,316.64 = 39,705.42 : x
  2. Step 2: Convert to fraction form
    71,968.80/99,316.64 = 39,705.42/x
  3. Step 3: Cross multiply
    71,968.80x = 99,316.64 × 39,705.42
  4. Step 4: Simplify right side
    71,968.80x = 3,943,408,904.19
  5. Step 5: Solve for x
    x = 3,943,408,904.19/71,968.80
  6. Step 6: Final answer
    x = 54,793.31

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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.