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Finding the Fourth Proportional to 101,813.61, 152,539.74 and 42,518.82

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Solution

The fourth proportional to 101,813.61, 152,539.74 and 42,518.82 is: 63,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,813.61 : 152,539.74 = 42,518.82 : x
  2. Step 2: Convert to fraction form
    101,813.61/152,539.74 = 42,518.82/x
  3. Step 3: Cross multiply
    101,813.61x = 152,539.74 × 42,518.82
  4. Step 4: Simplify right side
    101,813.61x = 6,485,809,747.91
  5. Step 5: Solve for x
    x = 6,485,809,747.91/101,813.61
  6. Step 6: Final answer
    x = 63,702.78

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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.