Home / 86,717.58-130,135.50-39,970.86

Finding the Fourth Proportional to 86,717.58, 130,135.50 and 39,970.86

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Solution

The fourth proportional to 86,717.58, 130,135.50 and 39,970.86 is: 59,983.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,717.58 : 130,135.50 = 39,970.86 : x
  2. Step 2: Convert to fraction form
    86,717.58/130,135.50 = 39,970.86/x
  3. Step 3: Cross multiply
    86,717.58x = 130,135.50 × 39,970.86
  4. Step 4: Simplify right side
    86,717.58x = 5,201,627,851.53
  5. Step 5: Solve for x
    x = 5,201,627,851.53/86,717.58
  6. Step 6: Final answer
    x = 59,983.54

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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.