Home / 42,709.28-64,065.54-11,544.54

Finding the Fourth Proportional to 42,709.28, 64,065.54 and 11,544.54

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Solution

The fourth proportional to 42,709.28, 64,065.54 and 11,544.54 is: 17,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,709.28 : 64,065.54 = 11,544.54 : x
  2. Step 2: Convert to fraction form
    42,709.28/64,065.54 = 11,544.54/x
  3. Step 3: Cross multiply
    42,709.28x = 64,065.54 × 11,544.54
  4. Step 4: Simplify right side
    42,709.28x = 739,607,189.15
  5. Step 5: Solve for x
    x = 739,607,189.15/42,709.28
  6. Step 6: Final answer
    x = 17,317.25

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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.