Home / 77,698.74-107,132.55-53,181.39

Finding the Fourth Proportional to 77,698.74, 107,132.55 and 53,181.39

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Solution

The fourth proportional to 77,698.74, 107,132.55 and 53,181.39 is: 73,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,698.74 : 107,132.55 = 53,181.39 : x
  2. Step 2: Convert to fraction form
    77,698.74/107,132.55 = 53,181.39/x
  3. Step 3: Cross multiply
    77,698.74x = 107,132.55 × 53,181.39
  4. Step 4: Simplify right side
    77,698.74x = 5,697,457,923.24
  5. Step 5: Solve for x
    x = 5,697,457,923.24/77,698.74
  6. Step 6: Final answer
    x = 73,327.55

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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.