Home / 77,327.28-106,711.45-47,112.59

Finding the Fourth Proportional to 77,327.28, 106,711.45 and 47,112.59

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Solution

The fourth proportional to 77,327.28, 106,711.45 and 47,112.59 is: 65,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,327.28 : 106,711.45 = 47,112.59 : x
  2. Step 2: Convert to fraction form
    77,327.28/106,711.45 = 47,112.59/x
  3. Step 3: Cross multiply
    77,327.28x = 106,711.45 × 47,112.59
  4. Step 4: Simplify right side
    77,327.28x = 5,027,452,792.16
  5. Step 5: Solve for x
    x = 5,027,452,792.16/77,327.28
  6. Step 6: Final answer
    x = 65,015.25

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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.