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Finding the Fourth Proportional to 42,739.84, 64,040.64 and 34,952.32

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Solution

The fourth proportional to 42,739.84, 64,040.64 and 34,952.32 is: 52,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.84 : 64,040.64 = 34,952.32 : x
  2. Step 2: Convert to fraction form
    42,739.84/64,040.64 = 34,952.32/x
  3. Step 3: Cross multiply
    42,739.84x = 64,040.64 × 34,952.32
  4. Step 4: Simplify right side
    42,739.84x = 2,238,368,942.28
  5. Step 5: Solve for x
    x = 2,238,368,942.28/42,739.84
  6. Step 6: Final answer
    x = 52,371.95

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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.