Home / 42,779.60-64,169.40-17,811.35

Finding the Fourth Proportional to 42,779.60, 64,169.40 and 17,811.35

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Solution

The fourth proportional to 42,779.60, 64,169.40 and 17,811.35 is: 26,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.60 : 64,169.40 = 17,811.35 : x
  2. Step 2: Convert to fraction form
    42,779.60/64,169.40 = 17,811.35/x
  3. Step 3: Cross multiply
    42,779.60x = 64,169.40 × 17,811.35
  4. Step 4: Simplify right side
    42,779.60x = 1,142,943,642.69
  5. Step 5: Solve for x
    x = 1,142,943,642.69/42,779.60
  6. Step 6: Final answer
    x = 26,717.03

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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.