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Finding the Fourth Proportional to 56,313.83, 84,483.16 and 21,253.79

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Solution

The fourth proportional to 56,313.83, 84,483.16 and 21,253.79 is: 31,885.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,313.83 : 84,483.16 = 21,253.79 : x
  2. Step 2: Convert to fraction form
    56,313.83/84,483.16 = 21,253.79/x
  3. Step 3: Cross multiply
    56,313.83x = 84,483.16 × 21,253.79
  4. Step 4: Simplify right side
    56,313.83x = 1,795,587,341.18
  5. Step 5: Solve for x
    x = 1,795,587,341.18/56,313.83
  6. Step 6: Final answer
    x = 31,885.37

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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.