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Finding the Fourth Proportional to 93,281.63, 128,732.12 and 53,002.21

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Solution

The fourth proportional to 93,281.63, 128,732.12 and 53,002.21 is: 73,145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.63 : 128,732.12 = 53,002.21 : x
  2. Step 2: Convert to fraction form
    93,281.63/128,732.12 = 53,002.21/x
  3. Step 3: Cross multiply
    93,281.63x = 128,732.12 × 53,002.21
  4. Step 4: Simplify right side
    93,281.63x = 6,823,086,711.27
  5. Step 5: Solve for x
    x = 6,823,086,711.27/93,281.63
  6. Step 6: Final answer
    x = 73,145.02

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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.