Home / 56,107.68-77,428.08-30,957.36

Finding the Fourth Proportional to 56,107.68, 77,428.08 and 30,957.36

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Solution

The fourth proportional to 56,107.68, 77,428.08 and 30,957.36 is: 42,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.68 : 77,428.08 = 30,957.36 : x
  2. Step 2: Convert to fraction form
    56,107.68/77,428.08 = 30,957.36/x
  3. Step 3: Cross multiply
    56,107.68x = 77,428.08 × 30,957.36
  4. Step 4: Simplify right side
    56,107.68x = 2,396,968,946.67
  5. Step 5: Solve for x
    x = 2,396,968,946.67/56,107.68
  6. Step 6: Final answer
    x = 42,720.87

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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.