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Finding the Fourth Proportional to 52,926, 79,389.60 and 17,386.80

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Solution

The fourth proportional to 52,926, 79,389.60 and 17,386.80 is: 26,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,926 : 79,389.60 = 17,386.80 : x
  2. Step 2: Convert to fraction form
    52,926/79,389.60 = 17,386.80/x
  3. Step 3: Cross multiply
    52,926x = 79,389.60 × 17,386.80
  4. Step 4: Simplify right side
    52,926x = 1,380,331,097.28
  5. Step 5: Solve for x
    x = 1,380,331,097.28/52,926
  6. Step 6: Final answer
    x = 26,080.40

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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.