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Finding the Fourth Proportional to 64,280.90, 88,706.66 and 35,987.60

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Solution

The fourth proportional to 64,280.90, 88,706.66 and 35,987.60 is: 49,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,280.90 : 88,706.66 = 35,987.60 : x
  2. Step 2: Convert to fraction form
    64,280.90/88,706.66 = 35,987.60/x
  3. Step 3: Cross multiply
    64,280.90x = 88,706.66 × 35,987.60
  4. Step 4: Simplify right side
    64,280.90x = 3,192,339,797.42
  5. Step 5: Solve for x
    x = 3,192,339,797.42/64,280.90
  6. Step 6: Final answer
    x = 49,662.34

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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.