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Finding the Fourth Proportional to 65,275.29, 90,088.07 and 36,990.09

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Solution

The fourth proportional to 65,275.29, 90,088.07 and 36,990.09 is: 51,050.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.29 : 90,088.07 = 36,990.09 : x
  2. Step 2: Convert to fraction form
    65,275.29/90,088.07 = 36,990.09/x
  3. Step 3: Cross multiply
    65,275.29x = 90,088.07 × 36,990.09
  4. Step 4: Simplify right side
    65,275.29x = 3,332,365,632.28
  5. Step 5: Solve for x
    x = 3,332,365,632.28/65,275.29
  6. Step 6: Final answer
    x = 51,050.95

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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.