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Finding the Fourth Proportional to 52,855.99, 79,271.40 and 21,266.17

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Solution

The fourth proportional to 52,855.99, 79,271.40 and 21,266.17 is: 31,894.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,855.99 : 79,271.40 = 21,266.17 : x
  2. Step 2: Convert to fraction form
    52,855.99/79,271.40 = 21,266.17/x
  3. Step 3: Cross multiply
    52,855.99x = 79,271.40 × 21,266.17
  4. Step 4: Simplify right side
    52,855.99x = 1,685,799,068.54
  5. Step 5: Solve for x
    x = 1,685,799,068.54/52,855.99
  6. Step 6: Final answer
    x = 31,894.19

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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.