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Finding the Fourth Proportional to 52,869.99, 79,279.87 and 30,690.16

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Solution

The fourth proportional to 52,869.99, 79,279.87 and 30,690.16 is: 46,020.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,869.99 : 79,279.87 = 30,690.16 : x
  2. Step 2: Convert to fraction form
    52,869.99/79,279.87 = 30,690.16/x
  3. Step 3: Cross multiply
    52,869.99x = 79,279.87 × 30,690.16
  4. Step 4: Simplify right side
    52,869.99x = 2,433,111,741.63
  5. Step 5: Solve for x
    x = 2,433,111,741.63/52,869.99
  6. Step 6: Final answer
    x = 46,020.66

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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.