Home / 76,888.32-115,332.48-30,163.20

Finding the Fourth Proportional to 76,888.32, 115,332.48 and 30,163.20

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Solution

The fourth proportional to 76,888.32, 115,332.48 and 30,163.20 is: 45,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,888.32 : 115,332.48 = 30,163.20 : x
  2. Step 2: Convert to fraction form
    76,888.32/115,332.48 = 30,163.20/x
  3. Step 3: Cross multiply
    76,888.32x = 115,332.48 × 30,163.20
  4. Step 4: Simplify right side
    76,888.32x = 3,478,796,660.74
  5. Step 5: Solve for x
    x = 3,478,796,660.74/76,888.32
  6. Step 6: Final answer
    x = 45,244.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.