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Finding the Fourth Proportional to 56,107.59, 77,428.42 and 30,957.09

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Solution

The fourth proportional to 56,107.59, 77,428.42 and 30,957.09 is: 42,720.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.59 : 77,428.42 = 30,957.09 : x
  2. Step 2: Convert to fraction form
    56,107.59/77,428.42 = 30,957.09/x
  3. Step 3: Cross multiply
    56,107.59x = 77,428.42 × 30,957.09
  4. Step 4: Simplify right side
    56,107.59x = 2,396,958,566.50
  5. Step 5: Solve for x
    x = 2,396,958,566.50/56,107.59
  6. Step 6: Final answer
    x = 42,720.75

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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.