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Finding the Fourth Proportional to 76,197.52, 105,135.60 and 45,987.76

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Solution

The fourth proportional to 76,197.52, 105,135.60 and 45,987.76 is: 63,452.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,197.52 : 105,135.60 = 45,987.76 : x
  2. Step 2: Convert to fraction form
    76,197.52/105,135.60 = 45,987.76/x
  3. Step 3: Cross multiply
    76,197.52x = 105,135.60 × 45,987.76
  4. Step 4: Simplify right side
    76,197.52x = 4,834,950,740.26
  5. Step 5: Solve for x
    x = 4,834,950,740.26/76,197.52
  6. Step 6: Final answer
    x = 63,452.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.