Home / 77,945.04-107,538.78-47,698.80

Finding the Fourth Proportional to 77,945.04, 107,538.78 and 47,698.80

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Solution

The fourth proportional to 77,945.04, 107,538.78 and 47,698.80 is: 65,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,945.04 : 107,538.78 = 47,698.80 : x
  2. Step 2: Convert to fraction form
    77,945.04/107,538.78 = 47,698.80/x
  3. Step 3: Cross multiply
    77,945.04x = 107,538.78 × 47,698.80
  4. Step 4: Simplify right side
    77,945.04x = 5,129,470,759.46
  5. Step 5: Solve for x
    x = 5,129,470,759.46/77,945.04
  6. Step 6: Final answer
    x = 65,808.82

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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.