Home / 42,709.78-64,064.72-11,545.03

Finding the Fourth Proportional to 42,709.78, 64,064.72 and 11,545.03

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Solution

The fourth proportional to 42,709.78, 64,064.72 and 11,545.03 is: 17,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,709.78 : 64,064.72 = 11,545.03 : x
  2. Step 2: Convert to fraction form
    42,709.78/64,064.72 = 11,545.03/x
  3. Step 3: Cross multiply
    42,709.78x = 64,064.72 × 11,545.03
  4. Step 4: Simplify right side
    42,709.78x = 739,629,223.29
  5. Step 5: Solve for x
    x = 739,629,223.29/42,709.78
  6. Step 6: Final answer
    x = 17,317.56

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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.