Home / 71,701.81-98,950.91-39,437.78

Finding the Fourth Proportional to 71,701.81, 98,950.91 and 39,437.78

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Solution

The fourth proportional to 71,701.81, 98,950.91 and 39,437.78 is: 54,425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,701.81 : 98,950.91 = 39,437.78 : x
  2. Step 2: Convert to fraction form
    71,701.81/98,950.91 = 39,437.78/x
  3. Step 3: Cross multiply
    71,701.81x = 98,950.91 × 39,437.78
  4. Step 4: Simplify right side
    71,701.81x = 3,902,403,527.44
  5. Step 5: Solve for x
    x = 3,902,403,527.44/71,701.81
  6. Step 6: Final answer
    x = 54,425.46

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1.5x scale

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.