Home / 39,969.78-59,991.12-17,779.02

Finding the Fourth Proportional to 39,969.78, 59,991.12 and 17,779.02

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Solution

The fourth proportional to 39,969.78, 59,991.12 and 17,779.02 is: 26,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.78 : 59,991.12 = 17,779.02 : x
  2. Step 2: Convert to fraction form
    39,969.78/59,991.12 = 17,779.02/x
  3. Step 3: Cross multiply
    39,969.78x = 59,991.12 × 17,779.02
  4. Step 4: Simplify right side
    39,969.78x = 1,066,583,322.30
  5. Step 5: Solve for x
    x = 1,066,583,322.30/39,969.78
  6. Step 6: Final answer
    x = 26,684.74

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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.