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Finding the Fourth Proportional to 93,146, 128,541.50 and 50,704.85

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Solution

The fourth proportional to 93,146, 128,541.50 and 50,704.85 is: 69,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,146 : 128,541.50 = 50,704.85 : x
  2. Step 2: Convert to fraction form
    93,146/128,541.50 = 50,704.85/x
  3. Step 3: Cross multiply
    93,146x = 128,541.50 × 50,704.85
  4. Step 4: Simplify right side
    93,146x = 6,517,677,222.75
  5. Step 5: Solve for x
    x = 6,517,677,222.75/93,146
  6. Step 6: Final answer
    x = 69,972.70

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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.