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Finding the Fourth Proportional to 42,657.36, 63,985.44 and 19,267.44

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Solution

The fourth proportional to 42,657.36, 63,985.44 and 19,267.44 is: 28,900.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,657.36 : 63,985.44 = 19,267.44 : x
  2. Step 2: Convert to fraction form
    42,657.36/63,985.44 = 19,267.44/x
  3. Step 3: Cross multiply
    42,657.36x = 63,985.44 × 19,267.44
  4. Step 4: Simplify right side
    42,657.36x = 1,232,835,626.07
  5. Step 5: Solve for x
    x = 1,232,835,626.07/42,657.36
  6. Step 6: Final answer
    x = 28,900.89

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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.