Home / 90,665.93-125,116.50-50,378.66

Finding the Fourth Proportional to 90,665.93, 125,116.50 and 50,378.66

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Solution

The fourth proportional to 90,665.93, 125,116.50 and 50,378.66 is: 69,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,665.93 : 125,116.50 = 50,378.66 : x
  2. Step 2: Convert to fraction form
    90,665.93/125,116.50 = 50,378.66/x
  3. Step 3: Cross multiply
    90,665.93x = 125,116.50 × 50,378.66
  4. Step 4: Simplify right side
    90,665.93x = 6,303,201,504.72
  5. Step 5: Solve for x
    x = 6,303,201,504.72/90,665.93
  6. Step 6: Final answer
    x = 69,521.17

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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.