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Finding the Fourth Proportional to 92,909.76, 128,216.56 and 50,468.96

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Solution

The fourth proportional to 92,909.76, 128,216.56 and 50,468.96 is: 69,647.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,909.76 : 128,216.56 = 50,468.96 : x
  2. Step 2: Convert to fraction form
    92,909.76/128,216.56 = 50,468.96/x
  3. Step 3: Cross multiply
    92,909.76x = 128,216.56 × 50,468.96
  4. Step 4: Simplify right side
    92,909.76x = 6,470,956,437.98
  5. Step 5: Solve for x
    x = 6,470,956,437.98/92,909.76
  6. Step 6: Final answer
    x = 69,647.76

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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.