Home / 77,582.09-107,074.86-47,384.78

Finding the Fourth Proportional to 77,582.09, 107,074.86 and 47,384.78

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Solution

The fourth proportional to 77,582.09, 107,074.86 and 47,384.78 is: 65,398.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,582.09 : 107,074.86 = 47,384.78 : x
  2. Step 2: Convert to fraction form
    77,582.09/107,074.86 = 47,384.78/x
  3. Step 3: Cross multiply
    77,582.09x = 107,074.86 × 47,384.78
  4. Step 4: Simplify right side
    77,582.09x = 5,073,718,149.26
  5. Step 5: Solve for x
    x = 5,073,718,149.26/77,582.09
  6. Step 6: Final answer
    x = 65,398.06

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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.