Home / 86,050.20-128,929.65-52,700.61

Finding the Fourth Proportional to 86,050.20, 128,929.65 and 52,700.61

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Solution

The fourth proportional to 86,050.20, 128,929.65 and 52,700.61 is: 78,961.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,050.20 : 128,929.65 = 52,700.61 : x
  2. Step 2: Convert to fraction form
    86,050.20/128,929.65 = 52,700.61/x
  3. Step 3: Cross multiply
    86,050.20x = 128,929.65 × 52,700.61
  4. Step 4: Simplify right side
    86,050.20x = 6,794,671,202.09
  5. Step 5: Solve for x
    x = 6,794,671,202.09/86,050.20
  6. Step 6: Final answer
    x = 78,961.71

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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.