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Finding the Fourth Proportional to 57,966.30, 81,386.10 and 57,966.30

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Solution

The fourth proportional to 57,966.30, 81,386.10 and 57,966.30 is: 81,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,966.30 : 81,386.10 = 57,966.30 : x
  2. Step 2: Convert to fraction form
    57,966.30/81,386.10 = 57,966.30/x
  3. Step 3: Cross multiply
    57,966.30x = 81,386.10 × 57,966.30
  4. Step 4: Simplify right side
    57,966.30x = 4,717,651,088.43
  5. Step 5: Solve for x
    x = 4,717,651,088.43/57,966.30
  6. Step 6: Final answer
    x = 81,386.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.