Home / 42,743.64-64,117.26-11,578.86

Finding the Fourth Proportional to 42,743.64, 64,117.26 and 11,578.86

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Solution

The fourth proportional to 42,743.64, 64,117.26 and 11,578.86 is: 17,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,743.64 : 64,117.26 = 11,578.86 : x
  2. Step 2: Convert to fraction form
    42,743.64/64,117.26 = 11,578.86/x
  3. Step 3: Cross multiply
    42,743.64x = 64,117.26 × 11,578.86
  4. Step 4: Simplify right side
    42,743.64x = 742,404,777.12
  5. Step 5: Solve for x
    x = 742,404,777.12/42,743.64
  6. Step 6: Final answer
    x = 17,368.78

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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.