Home / 85,899.57-128,710.85-46,475.25

Finding the Fourth Proportional to 85,899.57, 128,710.85 and 46,475.25

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Solution

The fourth proportional to 85,899.57, 128,710.85 and 46,475.25 is: 69,637.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,899.57 : 128,710.85 = 46,475.25 : x
  2. Step 2: Convert to fraction form
    85,899.57/128,710.85 = 46,475.25/x
  3. Step 3: Cross multiply
    85,899.57x = 128,710.85 × 46,475.25
  4. Step 4: Simplify right side
    85,899.57x = 5,981,868,699.09
  5. Step 5: Solve for x
    x = 5,981,868,699.09/85,899.57
  6. Step 6: Final answer
    x = 69,637.94

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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.