Home / 85,350.38-128,051.19-40,406.00

Finding the Fourth Proportional to 85,350.38, 128,051.19 and 40,406.00

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Solution

The fourth proportional to 85,350.38, 128,051.19 and 40,406.00 is: 60,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,350.38 : 128,051.19 = 40,406.00 : x
  2. Step 2: Convert to fraction form
    85,350.38/128,051.19 = 40,406.00/x
  3. Step 3: Cross multiply
    85,350.38x = 128,051.19 × 40,406.00
  4. Step 4: Simplify right side
    85,350.38x = 5,174,035,742.88
  5. Step 5: Solve for x
    x = 5,174,035,742.88/85,350.38
  6. Step 6: Final answer
    x = 60,621.12

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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.