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Finding the Fourth Proportional to 64,490.30, 88,995.86 and 36,195.38

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Solution

The fourth proportional to 64,490.30, 88,995.86 and 36,195.38 is: 49,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,490.30 : 88,995.86 = 36,195.38 : x
  2. Step 2: Convert to fraction form
    64,490.30/88,995.86 = 36,195.38/x
  3. Step 3: Cross multiply
    64,490.30x = 88,995.86 × 36,195.38
  4. Step 4: Simplify right side
    64,490.30x = 3,221,238,971.13
  5. Step 5: Solve for x
    x = 3,221,238,971.13/64,490.30
  6. Step 6: Final answer
    x = 49,949.20

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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.