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Finding the Fourth Proportional to 93,060.21, 128,419.20 and 54,821.32

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Solution

The fourth proportional to 93,060.21, 128,419.20 and 54,821.32 is: 75,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,060.21 : 128,419.20 = 54,821.32 : x
  2. Step 2: Convert to fraction form
    93,060.21/128,419.20 = 54,821.32/x
  3. Step 3: Cross multiply
    93,060.21x = 128,419.20 × 54,821.32
  4. Step 4: Simplify right side
    93,060.21x = 7,040,110,057.34
  5. Step 5: Solve for x
    x = 7,040,110,057.34/93,060.21
  6. Step 6: Final answer
    x = 75,651.13

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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.