Home / 43,631.27-65,386.35-19,880.78

Finding the Fourth Proportional to 43,631.27, 65,386.35 and 19,880.78

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Solution

The fourth proportional to 43,631.27, 65,386.35 and 19,880.78 is: 29,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,631.27 : 65,386.35 = 19,880.78 : x
  2. Step 2: Convert to fraction form
    43,631.27/65,386.35 = 19,880.78/x
  3. Step 3: Cross multiply
    43,631.27x = 65,386.35 × 19,880.78
  4. Step 4: Simplify right side
    43,631.27x = 1,299,931,362.12
  5. Step 5: Solve for x
    x = 1,299,931,362.12/43,631.27
  6. Step 6: Final answer
    x = 29,793.57

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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.