Home / 55,688.80-83,387.40-40,817.20

Finding the Fourth Proportional to 55,688.80, 83,387.40 and 40,817.20

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Solution

The fourth proportional to 55,688.80, 83,387.40 and 40,817.20 is: 61,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,688.80 : 83,387.40 = 40,817.20 : x
  2. Step 2: Convert to fraction form
    55,688.80/83,387.40 = 40,817.20/x
  3. Step 3: Cross multiply
    55,688.80x = 83,387.40 × 40,817.20
  4. Step 4: Simplify right side
    55,688.80x = 3,403,640,183.28
  5. Step 5: Solve for x
    x = 3,403,640,183.28/55,688.80
  6. Step 6: Final answer
    x = 61,118.94

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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.