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Finding the Fourth Proportional to 93,378.89, 128,863.80 and 50,938.31

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Solution

The fourth proportional to 93,378.89, 128,863.80 and 50,938.31 is: 70,295.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,378.89 : 128,863.80 = 50,938.31 : x
  2. Step 2: Convert to fraction form
    93,378.89/128,863.80 = 50,938.31/x
  3. Step 3: Cross multiply
    93,378.89x = 128,863.80 × 50,938.31
  4. Step 4: Simplify right side
    93,378.89x = 6,564,104,192.18
  5. Step 5: Solve for x
    x = 6,564,104,192.18/93,378.89
  6. Step 6: Final answer
    x = 70,295.38

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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.