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Finding the Fourth Proportional to 93,487.77, 128,857.77 and 66,228.87

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Solution

The fourth proportional to 93,487.77, 128,857.77 and 66,228.87 is: 91,285.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,487.77 : 128,857.77 = 66,228.87 : x
  2. Step 2: Convert to fraction form
    93,487.77/128,857.77 = 66,228.87/x
  3. Step 3: Cross multiply
    93,487.77x = 128,857.77 × 66,228.87
  4. Step 4: Simplify right side
    93,487.77x = 8,534,104,166.68
  5. Step 5: Solve for x
    x = 8,534,104,166.68/93,487.77
  6. Step 6: Final answer
    x = 91,285.79

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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.