Home / 86,912-119,938.56-49,186.36

Finding the Fourth Proportional to 86,912, 119,938.56 and 49,186.36

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Solution

The fourth proportional to 86,912, 119,938.56 and 49,186.36 is: 67,877.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912 : 119,938.56 = 49,186.36 : x
  2. Step 2: Convert to fraction form
    86,912/119,938.56 = 49,186.36/x
  3. Step 3: Cross multiply
    86,912x = 119,938.56 × 49,186.36
  4. Step 4: Simplify right side
    86,912x = 5,899,341,190.04
  5. Step 5: Solve for x
    x = 5,899,341,190.04/86,912
  6. Step 6: Final answer
    x = 67,877.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.