Home / 85,579.76-128,332.18-40,614.00

Finding the Fourth Proportional to 85,579.76, 128,332.18 and 40,614.00

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Solution

The fourth proportional to 85,579.76, 128,332.18 and 40,614.00 is: 60,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,579.76 : 128,332.18 = 40,614.00 : x
  2. Step 2: Convert to fraction form
    85,579.76/128,332.18 = 40,614.00/x
  3. Step 3: Cross multiply
    85,579.76x = 128,332.18 × 40,614.00
  4. Step 4: Simplify right side
    85,579.76x = 5,212,082,939.22
  5. Step 5: Solve for x
    x = 5,212,082,939.22/85,579.76
  6. Step 6: Final answer
    x = 60,903.22

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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.