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Finding the Fourth Proportional to 53,246.60, 79,869.90 and 13,803.40

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Solution

The fourth proportional to 53,246.60, 79,869.90 and 13,803.40 is: 20,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,246.60 : 79,869.90 = 13,803.40 : x
  2. Step 2: Convert to fraction form
    53,246.60/79,869.90 = 13,803.40/x
  3. Step 3: Cross multiply
    53,246.60x = 79,869.90 × 13,803.40
  4. Step 4: Simplify right side
    53,246.60x = 1,102,476,177.66
  5. Step 5: Solve for x
    x = 1,102,476,177.66/53,246.60
  6. Step 6: Final answer
    x = 20,705.10

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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.