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Finding the Fourth Proportional to 65,907, 90,951.66 and 37,612.08

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Solution

The fourth proportional to 65,907, 90,951.66 and 37,612.08 is: 51,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907 : 90,951.66 = 37,612.08 : x
  2. Step 2: Convert to fraction form
    65,907/90,951.66 = 37,612.08/x
  3. Step 3: Cross multiply
    65,907x = 90,951.66 × 37,612.08
  4. Step 4: Simplify right side
    65,907x = 3,420,881,112.05
  5. Step 5: Solve for x
    x = 3,420,881,112.05/65,907
  6. Step 6: Final answer
    x = 51,904.67

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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.