Home / 71,211.68-98,272.76-39,381.11

Finding the Fourth Proportional to 71,211.68, 98,272.76 and 39,381.11

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Solution

The fourth proportional to 71,211.68, 98,272.76 and 39,381.11 is: 54,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,211.68 : 98,272.76 = 39,381.11 : x
  2. Step 2: Convert to fraction form
    71,211.68/98,272.76 = 39,381.11/x
  3. Step 3: Cross multiply
    71,211.68x = 98,272.76 × 39,381.11
  4. Step 4: Simplify right side
    71,211.68x = 3,870,089,683.29
  5. Step 5: Solve for x
    x = 3,870,089,683.29/71,211.68
  6. Step 6: Final answer
    x = 54,346.28

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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.