Home / 56,121.93-77,448.11-30,971.25

Finding the Fourth Proportional to 56,121.93, 77,448.11 and 30,971.25

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Solution

The fourth proportional to 56,121.93, 77,448.11 and 30,971.25 is: 42,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,121.93 : 77,448.11 = 30,971.25 : x
  2. Step 2: Convert to fraction form
    56,121.93/77,448.11 = 30,971.25/x
  3. Step 3: Cross multiply
    56,121.93x = 77,448.11 × 30,971.25
  4. Step 4: Simplify right side
    56,121.93x = 2,398,664,621.98
  5. Step 5: Solve for x
    x = 2,398,664,621.98/56,121.93
  6. Step 6: Final answer
    x = 42,740.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.