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Finding the Fourth Proportional to 64,423.25, 88,913.81 and 39,287.33

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Solution

The fourth proportional to 64,423.25, 88,913.81 and 39,287.33 is: 54,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,423.25 : 88,913.81 = 39,287.33 : x
  2. Step 2: Convert to fraction form
    64,423.25/88,913.81 = 39,287.33/x
  3. Step 3: Cross multiply
    64,423.25x = 88,913.81 × 39,287.33
  4. Step 4: Simplify right side
    64,423.25x = 3,493,186,195.03
  5. Step 5: Solve for x
    x = 3,493,186,195.03/64,423.25
  6. Step 6: Final answer
    x = 54,222.45

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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.