Home / 71,685.08-98,926.56-39,421.04

Finding the Fourth Proportional to 71,685.08, 98,926.56 and 39,421.04

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Solution

The fourth proportional to 71,685.08, 98,926.56 and 39,421.04 is: 54,401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,685.08 : 98,926.56 = 39,421.04 : x
  2. Step 2: Convert to fraction form
    71,685.08/98,926.56 = 39,421.04/x
  3. Step 3: Cross multiply
    71,685.08x = 98,926.56 × 39,421.04
  4. Step 4: Simplify right side
    71,685.08x = 3,899,787,878.82
  5. Step 5: Solve for x
    x = 3,899,787,878.82/71,685.08
  6. Step 6: Final answer
    x = 54,401.67

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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.