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Finding the Fourth Proportional to 53,358.80, 80,038.19 and 13,915.81

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Solution

The fourth proportional to 53,358.80, 80,038.19 and 13,915.81 is: 20,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,358.80 : 80,038.19 = 13,915.81 : x
  2. Step 2: Convert to fraction form
    53,358.80/80,038.19 = 13,915.81/x
  3. Step 3: Cross multiply
    53,358.80x = 80,038.19 × 13,915.81
  4. Step 4: Simplify right side
    53,358.80x = 1,113,796,079.48
  5. Step 5: Solve for x
    x = 1,113,796,079.48/53,358.80
  6. Step 6: Final answer
    x = 20,873.71

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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.