Home / 56,143.96-77,478.48-30,993.28

Finding the Fourth Proportional to 56,143.96, 77,478.48 and 30,993.28

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Solution

The fourth proportional to 56,143.96, 77,478.48 and 30,993.28 is: 42,770.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,143.96 : 77,478.48 = 30,993.28 : x
  2. Step 2: Convert to fraction form
    56,143.96/77,478.48 = 30,993.28/x
  3. Step 3: Cross multiply
    56,143.96x = 77,478.48 × 30,993.28
  4. Step 4: Simplify right side
    56,143.96x = 2,401,312,224.61
  5. Step 5: Solve for x
    x = 2,401,312,224.61/56,143.96
  6. Step 6: Final answer
    x = 42,770.62

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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.