Home / 76,973.12-115,291.20-45,739.52

Finding the Fourth Proportional to 76,973.12, 115,291.20 and 45,739.52

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Solution

The fourth proportional to 76,973.12, 115,291.20 and 45,739.52 is: 68,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,973.12 : 115,291.20 = 45,739.52 : x
  2. Step 2: Convert to fraction form
    76,973.12/115,291.20 = 45,739.52/x
  3. Step 3: Cross multiply
    76,973.12x = 115,291.20 × 45,739.52
  4. Step 4: Simplify right side
    76,973.12x = 5,273,364,148.22
  5. Step 5: Solve for x
    x = 5,273,364,148.22/76,973.12
  6. Step 6: Final answer
    x = 68,509.16

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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.