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Finding the Fourth Proportional to 56,590.79, 84,923.03 and 21,530.75

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Solution

The fourth proportional to 56,590.79, 84,923.03 and 21,530.75 is: 32,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,590.79 : 84,923.03 = 21,530.75 : x
  2. Step 2: Convert to fraction form
    56,590.79/84,923.03 = 21,530.75/x
  3. Step 3: Cross multiply
    56,590.79x = 84,923.03 × 21,530.75
  4. Step 4: Simplify right side
    56,590.79x = 1,828,456,157.38
  5. Step 5: Solve for x
    x = 1,828,456,157.38/56,590.79
  6. Step 6: Final answer
    x = 32,310.14

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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.