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Finding the Fourth Proportional to 64,484.02, 88,995.54 and 38,987.38

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Solution

The fourth proportional to 64,484.02, 88,995.54 and 38,987.38 is: 53,807.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,484.02 : 88,995.54 = 38,987.38 : x
  2. Step 2: Convert to fraction form
    64,484.02/88,995.54 = 38,987.38/x
  3. Step 3: Cross multiply
    64,484.02x = 88,995.54 × 38,987.38
  4. Step 4: Simplify right side
    64,484.02x = 3,469,702,936.29
  5. Step 5: Solve for x
    x = 3,469,702,936.29/64,484.02
  6. Step 6: Final answer
    x = 53,807.17

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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.