Home / 90,764.60-125,220.79-56,293.38

Finding the Fourth Proportional to 90,764.60, 125,220.79 and 56,293.38

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Solution

The fourth proportional to 90,764.60, 125,220.79 and 56,293.38 is: 77,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,764.60 : 125,220.79 = 56,293.38 : x
  2. Step 2: Convert to fraction form
    90,764.60/125,220.79 = 56,293.38/x
  3. Step 3: Cross multiply
    90,764.60x = 125,220.79 × 56,293.38
  4. Step 4: Simplify right side
    90,764.60x = 7,049,101,269.09
  5. Step 5: Solve for x
    x = 7,049,101,269.09/90,764.60
  6. Step 6: Final answer
    x = 77,663.55

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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.