Home / 85,331.29-128,054.03-35,411.39

Finding the Fourth Proportional to 85,331.29, 128,054.03 and 35,411.39

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Solution

The fourth proportional to 85,331.29, 128,054.03 and 35,411.39 is: 53,140.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,331.29 : 128,054.03 = 35,411.39 : x
  2. Step 2: Convert to fraction form
    85,331.29/128,054.03 = 35,411.39/x
  3. Step 3: Cross multiply
    85,331.29x = 128,054.03 × 35,411.39
  4. Step 4: Simplify right side
    85,331.29x = 4,534,571,111.65
  5. Step 5: Solve for x
    x = 4,534,571,111.65/85,331.29
  6. Step 6: Final answer
    x = 53,140.78

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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.