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Finding the Fourth Proportional to 53,320.59, 79,978.45 and 17,779.41

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Solution

The fourth proportional to 53,320.59, 79,978.45 and 17,779.41 is: 26,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,320.59 : 79,978.45 = 17,779.41 : x
  2. Step 2: Convert to fraction form
    53,320.59/79,978.45 = 17,779.41/x
  3. Step 3: Cross multiply
    53,320.59x = 79,978.45 × 17,779.41
  4. Step 4: Simplify right side
    53,320.59x = 1,421,969,653.71
  5. Step 5: Solve for x
    x = 1,421,969,653.71/53,320.59
  6. Step 6: Final answer
    x = 26,668.30

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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.