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Finding the Fourth Proportional to 53,228.65, 79,842.98 and 21,655.89

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Solution

The fourth proportional to 53,228.65, 79,842.98 and 21,655.89 is: 32,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,228.65 : 79,842.98 = 21,655.89 : x
  2. Step 2: Convert to fraction form
    53,228.65/79,842.98 = 21,655.89/x
  3. Step 3: Cross multiply
    53,228.65x = 79,842.98 × 21,655.89
  4. Step 4: Simplify right side
    53,228.65x = 1,729,070,846.29
  5. Step 5: Solve for x
    x = 1,729,070,846.29/53,228.65
  6. Step 6: Final answer
    x = 32,483.84

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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.