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Finding the Fourth Proportional to 93,110.92, 128,495.40 and 50,671.78

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Solution

The fourth proportional to 93,110.92, 128,495.40 and 50,671.78 is: 69,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,110.92 : 128,495.40 = 50,671.78 : x
  2. Step 2: Convert to fraction form
    93,110.92/128,495.40 = 50,671.78/x
  3. Step 3: Cross multiply
    93,110.92x = 128,495.40 × 50,671.78
  4. Step 4: Simplify right side
    93,110.92x = 6,511,090,639.81
  5. Step 5: Solve for x
    x = 6,511,090,639.81/93,110.92
  6. Step 6: Final answer
    x = 69,928.32

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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.