Home / 77,712.71-107,242.38-43,721.24

Finding the Fourth Proportional to 77,712.71, 107,242.38 and 43,721.24

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Solution

The fourth proportional to 77,712.71, 107,242.38 and 43,721.24 is: 60,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,712.71 : 107,242.38 = 43,721.24 : x
  2. Step 2: Convert to fraction form
    77,712.71/107,242.38 = 43,721.24/x
  3. Step 3: Cross multiply
    77,712.71x = 107,242.38 × 43,721.24
  4. Step 4: Simplify right side
    77,712.71x = 4,688,769,834.15
  5. Step 5: Solve for x
    x = 4,688,769,834.15/77,712.71
  6. Step 6: Final answer
    x = 60,334.66

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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.