Home / 90,999.31-125,582.69-50,712.72

Finding the Fourth Proportional to 90,999.31, 125,582.69 and 50,712.72

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Solution

The fourth proportional to 90,999.31, 125,582.69 and 50,712.72 is: 69,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,999.31 : 125,582.69 = 50,712.72 : x
  2. Step 2: Convert to fraction form
    90,999.31/125,582.69 = 50,712.72/x
  3. Step 3: Cross multiply
    90,999.31x = 125,582.69 × 50,712.72
  4. Step 4: Simplify right side
    90,999.31x = 6,368,639,794.82
  5. Step 5: Solve for x
    x = 6,368,639,794.82/90,999.31
  6. Step 6: Final answer
    x = 69,985.58

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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.