Home / 71,684.14-98,926.66-39,421.20

Finding the Fourth Proportional to 71,684.14, 98,926.66 and 39,421.20

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Solution

The fourth proportional to 71,684.14, 98,926.66 and 39,421.20 is: 54,402.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,684.14 : 98,926.66 = 39,421.20 : x
  2. Step 2: Convert to fraction form
    71,684.14/98,926.66 = 39,421.20/x
  3. Step 3: Cross multiply
    71,684.14x = 98,926.66 × 39,421.20
  4. Step 4: Simplify right side
    71,684.14x = 3,899,807,649.19
  5. Step 5: Solve for x
    x = 3,899,807,649.19/71,684.14
  6. Step 6: Final answer
    x = 54,402.66

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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.