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Finding the Fourth Proportional to 93,126.52, 128,518.80 and 54,887.68

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Solution

The fourth proportional to 93,126.52, 128,518.80 and 54,887.68 is: 75,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,126.52 : 128,518.80 = 54,887.68 : x
  2. Step 2: Convert to fraction form
    93,126.52/128,518.80 = 54,887.68/x
  3. Step 3: Cross multiply
    93,126.52x = 128,518.80 × 54,887.68
  4. Step 4: Simplify right side
    93,126.52x = 7,054,098,768.38
  5. Step 5: Solve for x
    x = 7,054,098,768.38/93,126.52
  6. Step 6: Final answer
    x = 75,747.48

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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.