Home / 85,470.33-128,220.09-26,304.69

Finding the Fourth Proportional to 85,470.33, 128,220.09 and 26,304.69

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Solution

The fourth proportional to 85,470.33, 128,220.09 and 26,304.69 is: 39,461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,470.33 : 128,220.09 = 26,304.69 : x
  2. Step 2: Convert to fraction form
    85,470.33/128,220.09 = 26,304.69/x
  3. Step 3: Cross multiply
    85,470.33x = 128,220.09 × 26,304.69
  4. Step 4: Simplify right side
    85,470.33x = 3,372,789,719.22
  5. Step 5: Solve for x
    x = 3,372,789,719.22/85,470.33
  6. Step 6: Final answer
    x = 39,461.53

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1.5x scale

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.