Home / 76,895.04-115,407.36-30,180.72

Finding the Fourth Proportional to 76,895.04, 115,407.36 and 30,180.72

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Solution

The fourth proportional to 76,895.04, 115,407.36 and 30,180.72 is: 45,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,895.04 : 115,407.36 = 30,180.72 : x
  2. Step 2: Convert to fraction form
    76,895.04/115,407.36 = 30,180.72/x
  3. Step 3: Cross multiply
    76,895.04x = 115,407.36 × 30,180.72
  4. Step 4: Simplify right side
    76,895.04x = 3,483,077,218.10
  5. Step 5: Solve for x
    x = 3,483,077,218.10/76,895.04
  6. Step 6: Final answer
    x = 45,296.51

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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.