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Finding the Fourth Proportional to 42,762.53, 64,143.80 and 19,063.96

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Solution

The fourth proportional to 42,762.53, 64,143.80 and 19,063.96 is: 28,595.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,762.53 : 64,143.80 = 19,063.96 : x
  2. Step 2: Convert to fraction form
    42,762.53/64,143.80 = 19,063.96/x
  3. Step 3: Cross multiply
    42,762.53x = 64,143.80 × 19,063.96
  4. Step 4: Simplify right side
    42,762.53x = 1,222,834,653.26
  5. Step 5: Solve for x
    x = 1,222,834,653.26/42,762.53
  6. Step 6: Final answer
    x = 28,595.94

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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.