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Finding the Fourth Proportional to 93,379.50, 128,863.71 and 50,938.20

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Solution

The fourth proportional to 93,379.50, 128,863.71 and 50,938.20 is: 70,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,379.50 : 128,863.71 = 50,938.20 : x
  2. Step 2: Convert to fraction form
    93,379.50/128,863.71 = 50,938.20/x
  3. Step 3: Cross multiply
    93,379.50x = 128,863.71 × 50,938.20
  4. Step 4: Simplify right side
    93,379.50x = 6,564,085,432.72
  5. Step 5: Solve for x
    x = 6,564,085,432.72/93,379.50
  6. Step 6: Final answer
    x = 70,294.72

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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.