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Finding the Fourth Proportional to 56,502.67, 84,721.18 and 21,423.19

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Solution

The fourth proportional to 56,502.67, 84,721.18 and 21,423.19 is: 32,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,502.67 : 84,721.18 = 21,423.19 : x
  2. Step 2: Convert to fraction form
    56,502.67/84,721.18 = 21,423.19/x
  3. Step 3: Cross multiply
    56,502.67x = 84,721.18 × 21,423.19
  4. Step 4: Simplify right side
    56,502.67x = 1,814,997,936.16
  5. Step 5: Solve for x
    x = 1,814,997,936.16/56,502.67
  6. Step 6: Final answer
    x = 32,122.34

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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.