Home / 85,340.07-127,970.48-49,811.65

Finding the Fourth Proportional to 85,340.07, 127,970.48 and 49,811.65

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Solution

The fourth proportional to 85,340.07, 127,970.48 and 49,811.65 is: 74,694.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,340.07 : 127,970.48 = 49,811.65 : x
  2. Step 2: Convert to fraction form
    85,340.07/127,970.48 = 49,811.65/x
  3. Step 3: Cross multiply
    85,340.07x = 127,970.48 × 49,811.65
  4. Step 4: Simplify right side
    85,340.07x = 6,374,420,564.69
  5. Step 5: Solve for x
    x = 6,374,420,564.69/85,340.07
  6. Step 6: Final answer
    x = 74,694.34

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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.