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Finding the Fourth Proportional to 93,471.76, 128,986.53 and 53,181.76

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Solution

The fourth proportional to 93,471.76, 128,986.53 and 53,181.76 is: 73,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,471.76 : 128,986.53 = 53,181.76 : x
  2. Step 2: Convert to fraction form
    93,471.76/128,986.53 = 53,181.76/x
  3. Step 3: Cross multiply
    93,471.76x = 128,986.53 × 53,181.76
  4. Step 4: Simplify right side
    93,471.76x = 6,859,730,681.69
  5. Step 5: Solve for x
    x = 6,859,730,681.69/93,471.76
  6. Step 6: Final answer
    x = 73,388.27

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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.