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Finding the Fourth Proportional to 92,847.16, 128,129.70 and 50,405.92

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Solution

The fourth proportional to 92,847.16, 128,129.70 and 50,405.92 is: 69,560.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,847.16 : 128,129.70 = 50,405.92 : x
  2. Step 2: Convert to fraction form
    92,847.16/128,129.70 = 50,405.92/x
  3. Step 3: Cross multiply
    92,847.16x = 128,129.70 × 50,405.92
  4. Step 4: Simplify right side
    92,847.16x = 6,458,495,407.82
  5. Step 5: Solve for x
    x = 6,458,495,407.82/92,847.16
  6. Step 6: Final answer
    x = 69,560.51

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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.