Home / 85,364.48-128,112.06-38,650.16

Finding the Fourth Proportional to 85,364.48, 128,112.06 and 38,650.16

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Solution

The fourth proportional to 85,364.48, 128,112.06 and 38,650.16 is: 58,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.48 : 128,112.06 = 38,650.16 : x
  2. Step 2: Convert to fraction form
    85,364.48/128,112.06 = 38,650.16/x
  3. Step 3: Cross multiply
    85,364.48x = 128,112.06 × 38,650.16
  4. Step 4: Simplify right side
    85,364.48x = 4,951,551,616.93
  5. Step 5: Solve for x
    x = 4,951,551,616.93/85,364.48
  6. Step 6: Final answer
    x = 58,004.82

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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.