Home / 42,779.70-64,169.55-17,811.45

Finding the Fourth Proportional to 42,779.70, 64,169.55 and 17,811.45

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Solution

The fourth proportional to 42,779.70, 64,169.55 and 17,811.45 is: 26,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.70 : 64,169.55 = 17,811.45 : x
  2. Step 2: Convert to fraction form
    42,779.70/64,169.55 = 17,811.45/x
  3. Step 3: Cross multiply
    42,779.70x = 64,169.55 × 17,811.45
  4. Step 4: Simplify right side
    42,779.70x = 1,142,952,731.35
  5. Step 5: Solve for x
    x = 1,142,952,731.35/42,779.70
  6. Step 6: Final answer
    x = 26,717.18

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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.