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Finding the Fourth Proportional to 93,145.96, 128,541.50 and 50,704.57

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Solution

The fourth proportional to 93,145.96, 128,541.50 and 50,704.57 is: 69,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,145.96 : 128,541.50 = 50,704.57 : x
  2. Step 2: Convert to fraction form
    93,145.96/128,541.50 = 50,704.57/x
  3. Step 3: Cross multiply
    93,145.96x = 128,541.50 × 50,704.57
  4. Step 4: Simplify right side
    93,145.96x = 6,517,641,484.66
  5. Step 5: Solve for x
    x = 6,517,641,484.66/93,145.96
  6. Step 6: Final answer
    x = 69,972.35

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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.