Home / 65,151.28-97,742.84-20,778.04

Finding the Fourth Proportional to 65,151.28, 97,742.84 and 20,778.04

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Solution

The fourth proportional to 65,151.28, 97,742.84 and 20,778.04 is: 31,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,151.28 : 97,742.84 = 20,778.04 : x
  2. Step 2: Convert to fraction form
    65,151.28/97,742.84 = 20,778.04/x
  3. Step 3: Cross multiply
    65,151.28x = 97,742.84 × 20,778.04
  4. Step 4: Simplify right side
    65,151.28x = 2,030,904,639.23
  5. Step 5: Solve for x
    x = 2,030,904,639.23/65,151.28
  6. Step 6: Final answer
    x = 31,172.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.