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Finding the Fourth Proportional to 65,315.68, 90,133.08 and 37,020.76

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Solution

The fourth proportional to 65,315.68, 90,133.08 and 37,020.76 is: 51,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,315.68 : 90,133.08 = 37,020.76 : x
  2. Step 2: Convert to fraction form
    65,315.68/90,133.08 = 37,020.76/x
  3. Step 3: Cross multiply
    65,315.68x = 90,133.08 × 37,020.76
  4. Step 4: Simplify right side
    65,315.68x = 3,336,795,122.74
  5. Step 5: Solve for x
    x = 3,336,795,122.74/65,315.68
  6. Step 6: Final answer
    x = 51,087.20

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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.