Home / 42,779.55-64,185.74-17,812.90

Finding the Fourth Proportional to 42,779.55, 64,185.74 and 17,812.90

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Solution

The fourth proportional to 42,779.55, 64,185.74 and 17,812.90 is: 26,726.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.55 : 64,185.74 = 17,812.90 : x
  2. Step 2: Convert to fraction form
    42,779.55/64,185.74 = 17,812.90/x
  3. Step 3: Cross multiply
    42,779.55x = 64,185.74 × 17,812.90
  4. Step 4: Simplify right side
    42,779.55x = 1,143,334,226.01
  5. Step 5: Solve for x
    x = 1,143,334,226.01/42,779.55
  6. Step 6: Final answer
    x = 26,726.18

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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.