Home / 86,915.04-130,272.72-36,921.12

Finding the Fourth Proportional to 86,915.04, 130,272.72 and 36,921.12

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Solution

The fourth proportional to 86,915.04, 130,272.72 and 36,921.12 is: 55,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.04 : 130,272.72 = 36,921.12 : x
  2. Step 2: Convert to fraction form
    86,915.04/130,272.72 = 36,921.12/x
  3. Step 3: Cross multiply
    86,915.04x = 130,272.72 × 36,921.12
  4. Step 4: Simplify right side
    86,915.04x = 4,809,814,727.85
  5. Step 5: Solve for x
    x = 4,809,814,727.85/86,915.04
  6. Step 6: Final answer
    x = 55,339.27

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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.