Home / 56,015.30-77,300.25-30,865.70

Finding the Fourth Proportional to 56,015.30, 77,300.25 and 30,865.70

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Solution

The fourth proportional to 56,015.30, 77,300.25 and 30,865.70 is: 42,594.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,015.30 : 77,300.25 = 30,865.70 : x
  2. Step 2: Convert to fraction form
    56,015.30/77,300.25 = 30,865.70/x
  3. Step 3: Cross multiply
    56,015.30x = 77,300.25 × 30,865.70
  4. Step 4: Simplify right side
    56,015.30x = 2,385,926,326.43
  5. Step 5: Solve for x
    x = 2,385,926,326.43/56,015.30
  6. Step 6: Final answer
    x = 42,594.19

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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.