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Finding the Fourth Proportional to 93,214.60, 128,618.44 and 54,986.16

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Solution

The fourth proportional to 93,214.60, 128,618.44 and 54,986.16 is: 75,870.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,214.60 : 128,618.44 = 54,986.16 : x
  2. Step 2: Convert to fraction form
    93,214.60/128,618.44 = 54,986.16/x
  3. Step 3: Cross multiply
    93,214.60x = 128,618.44 × 54,986.16
  4. Step 4: Simplify right side
    93,214.60x = 7,072,234,120.79
  5. Step 5: Solve for x
    x = 7,072,234,120.79/93,214.60
  6. Step 6: Final answer
    x = 75,870.46

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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.