Home / 85,530.20-128,350.37-46,114.79

Finding the Fourth Proportional to 85,530.20, 128,350.37 and 46,114.79

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Solution

The fourth proportional to 85,530.20, 128,350.37 and 46,114.79 is: 69,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530.20 : 128,350.37 = 46,114.79 : x
  2. Step 2: Convert to fraction form
    85,530.20/128,350.37 = 46,114.79/x
  3. Step 3: Cross multiply
    85,530.20x = 128,350.37 × 46,114.79
  4. Step 4: Simplify right side
    85,530.20x = 5,918,849,832.51
  5. Step 5: Solve for x
    x = 5,918,849,832.51/85,530.20
  6. Step 6: Final answer
    x = 69,201.87

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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.