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Finding the Fourth Proportional to 93,469.76, 128,990.97 and 51,031.02

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Solution

The fourth proportional to 93,469.76, 128,990.97 and 51,031.02 is: 70,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,469.76 : 128,990.97 = 51,031.02 : x
  2. Step 2: Convert to fraction form
    93,469.76/128,990.97 = 51,031.02/x
  3. Step 3: Cross multiply
    93,469.76x = 128,990.97 × 51,031.02
  4. Step 4: Simplify right side
    93,469.76x = 6,582,540,769.89
  5. Step 5: Solve for x
    x = 6,582,540,769.89/93,469.76
  6. Step 6: Final answer
    x = 70,424.29

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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.