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Finding the Fourth Proportional to 61,922.80, 92,830.20 and 42,137.20

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Solution

The fourth proportional to 61,922.80, 92,830.20 and 42,137.20 is: 63,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,922.80 : 92,830.20 = 42,137.20 : x
  2. Step 2: Convert to fraction form
    61,922.80/92,830.20 = 42,137.20/x
  3. Step 3: Cross multiply
    61,922.80x = 92,830.20 × 42,137.20
  4. Step 4: Simplify right side
    61,922.80x = 3,911,604,703.44
  5. Step 5: Solve for x
    x = 3,911,604,703.44/61,922.80
  6. Step 6: Final answer
    x = 63,169.05

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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.