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Finding the Fourth Proportional to 56,336, 84,505.20 and 21,292.16

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Solution

The fourth proportional to 56,336, 84,505.20 and 21,292.16 is: 31,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,336 : 84,505.20 = 21,292.16 : x
  2. Step 2: Convert to fraction form
    56,336/84,505.20 = 21,292.16/x
  3. Step 3: Cross multiply
    56,336x = 84,505.20 × 21,292.16
  4. Step 4: Simplify right side
    56,336x = 1,799,298,239.23
  5. Step 5: Solve for x
    x = 1,799,298,239.23/56,336
  6. Step 6: Final answer
    x = 31,938.69

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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.