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Finding the Fourth Proportional to 53,184, 79,779.84 and 20,352

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Solution

The fourth proportional to 53,184, 79,779.84 and 20,352 is: 30,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,184 : 79,779.84 = 20,352 : x
  2. Step 2: Convert to fraction form
    53,184/79,779.84 = 20,352/x
  3. Step 3: Cross multiply
    53,184x = 79,779.84 × 20,352
  4. Step 4: Simplify right side
    53,184x = 1,623,679,303.68
  5. Step 5: Solve for x
    x = 1,623,679,303.68/53,184
  6. Step 6: Final answer
    x = 30,529.47

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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.