Home / 90,669.24-125,087.70-52,421.76

Finding the Fourth Proportional to 90,669.24, 125,087.70 and 52,421.76

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Solution

The fourth proportional to 90,669.24, 125,087.70 and 52,421.76 is: 72,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,669.24 : 125,087.70 = 52,421.76 : x
  2. Step 2: Convert to fraction form
    90,669.24/125,087.70 = 52,421.76/x
  3. Step 3: Cross multiply
    90,669.24x = 125,087.70 × 52,421.76
  4. Step 4: Simplify right side
    90,669.24x = 6,557,317,388.35
  5. Step 5: Solve for x
    x = 6,557,317,388.35/90,669.24
  6. Step 6: Final answer
    x = 72,321.30

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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.