Home / 56,313.47-77,711.90-30,819.57

Finding the Fourth Proportional to 56,313.47, 77,711.90 and 30,819.57

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Solution

The fourth proportional to 56,313.47, 77,711.90 and 30,819.57 is: 42,530.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,313.47 : 77,711.90 = 30,819.57 : x
  2. Step 2: Convert to fraction form
    56,313.47/77,711.90 = 30,819.57/x
  3. Step 3: Cross multiply
    56,313.47x = 77,711.90 × 30,819.57
  4. Step 4: Simplify right side
    56,313.47x = 2,395,047,187.79
  5. Step 5: Solve for x
    x = 2,395,047,187.79/56,313.47
  6. Step 6: Final answer
    x = 42,530.63

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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.