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Finding the Fourth Proportional to 65,438.88, 90,310.32 and 37,146.39

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Solution

The fourth proportional to 65,438.88, 90,310.32 and 37,146.39 is: 51,264.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,438.88 : 90,310.32 = 37,146.39 : x
  2. Step 2: Convert to fraction form
    65,438.88/90,310.32 = 37,146.39/x
  3. Step 3: Cross multiply
    65,438.88x = 90,310.32 × 37,146.39
  4. Step 4: Simplify right side
    65,438.88x = 3,354,702,367.74
  5. Step 5: Solve for x
    x = 3,354,702,367.74/65,438.88
  6. Step 6: Final answer
    x = 51,264.67

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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.