Home / 55,621.04-83,420.32-20,081.28

Finding the Fourth Proportional to 55,621.04, 83,420.32 and 20,081.28

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Solution

The fourth proportional to 55,621.04, 83,420.32 and 20,081.28 is: 30,117.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,621.04 : 83,420.32 = 20,081.28 : x
  2. Step 2: Convert to fraction form
    55,621.04/83,420.32 = 20,081.28/x
  3. Step 3: Cross multiply
    55,621.04x = 83,420.32 × 20,081.28
  4. Step 4: Simplify right side
    55,621.04x = 1,675,186,803.61
  5. Step 5: Solve for x
    x = 1,675,186,803.61/55,621.04
  6. Step 6: Final answer
    x = 30,117.86

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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.