Home / 67,386.86-101,090.40-21,779.36

Finding the Fourth Proportional to 67,386.86, 101,090.40 and 21,779.36

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Solution

The fourth proportional to 67,386.86, 101,090.40 and 21,779.36 is: 32,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,386.86 : 101,090.40 = 21,779.36 : x
  2. Step 2: Convert to fraction form
    67,386.86/101,090.40 = 21,779.36/x
  3. Step 3: Cross multiply
    67,386.86x = 101,090.40 × 21,779.36
  4. Step 4: Simplify right side
    67,386.86x = 2,201,684,214.14
  5. Step 5: Solve for x
    x = 2,201,684,214.14/67,386.86
  6. Step 6: Final answer
    x = 32,672.31

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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.