Home / 86,910.45-130,340.57-39,499.13

Finding the Fourth Proportional to 86,910.45, 130,340.57 and 39,499.13

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Solution

The fourth proportional to 86,910.45, 130,340.57 and 39,499.13 is: 59,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910.45 : 130,340.57 = 39,499.13 : x
  2. Step 2: Convert to fraction form
    86,910.45/130,340.57 = 39,499.13/x
  3. Step 3: Cross multiply
    86,910.45x = 130,340.57 × 39,499.13
  4. Step 4: Simplify right side
    86,910.45x = 5,148,338,269.51
  5. Step 5: Solve for x
    x = 5,148,338,269.51/86,910.45
  6. Step 6: Final answer
    x = 59,237.28

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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.