Home / 42,792-64,131.44-30,985.26

Finding the Fourth Proportional to 42,792, 64,131.44 and 30,985.26

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Solution

The fourth proportional to 42,792, 64,131.44 and 30,985.26 is: 46,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,792 : 64,131.44 = 30,985.26 : x
  2. Step 2: Convert to fraction form
    42,792/64,131.44 = 30,985.26/x
  3. Step 3: Cross multiply
    42,792x = 64,131.44 × 30,985.26
  4. Step 4: Simplify right side
    42,792x = 1,987,129,187.65
  5. Step 5: Solve for x
    x = 1,987,129,187.65/42,792
  6. Step 6: Final answer
    x = 46,436.93

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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.