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Finding the Fourth Proportional to 42,865.00, 64,253.66 and 30,355.36

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Solution

The fourth proportional to 42,865.00, 64,253.66 and 30,355.36 is: 45,501.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,865.00 : 64,253.66 = 30,355.36 : x
  2. Step 2: Convert to fraction form
    42,865.00/64,253.66 = 30,355.36/x
  3. Step 3: Cross multiply
    42,865.00x = 64,253.66 × 30,355.36
  4. Step 4: Simplify right side
    42,865.00x = 1,950,442,668.21
  5. Step 5: Solve for x
    x = 1,950,442,668.21/42,865.00
  6. Step 6: Final answer
    x = 45,501.99

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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.