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Finding the Fourth Proportional to 90,662.68, 136,048.74 and 64,584.28

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Solution

The fourth proportional to 90,662.68, 136,048.74 and 64,584.28 is: 96,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,662.68 : 136,048.74 = 64,584.28 : x
  2. Step 2: Convert to fraction form
    90,662.68/136,048.74 = 64,584.28/x
  3. Step 3: Cross multiply
    90,662.68x = 136,048.74 × 64,584.28
  4. Step 4: Simplify right side
    90,662.68x = 8,786,609,917.81
  5. Step 5: Solve for x
    x = 8,786,609,917.81/90,662.68
  6. Step 6: Final answer
    x = 96,915.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.