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Finding the Fourth Proportional to 93,412.59, 128,908.31 and 50,971.83

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Solution

The fourth proportional to 93,412.59, 128,908.31 and 50,971.83 is: 70,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.59 : 128,908.31 = 50,971.83 : x
  2. Step 2: Convert to fraction form
    93,412.59/128,908.31 = 50,971.83/x
  3. Step 3: Cross multiply
    93,412.59x = 128,908.31 × 50,971.83
  4. Step 4: Simplify right side
    93,412.59x = 6,570,692,208.05
  5. Step 5: Solve for x
    x = 6,570,692,208.05/93,412.59
  6. Step 6: Final answer
    x = 70,340.54

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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.