Home / 76,833,987.72-115,199,786.52-42,306,648.66

Finding the Fourth Proportional to 76,833,987.72, 115,199,786.52 and 42,306,648.66

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Solution

The fourth proportional to 76,833,987.72, 115,199,786.52 and 42,306,648.66 is: 63,431,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,833,987.72 : 115,199,786.52 = 42,306,648.66 : x
  2. Step 2: Convert to fraction form
    76,833,987.72/115,199,786.52 = 42,306,648.66/x
  3. Step 3: Cross multiply
    76,833,987.72x = 115,199,786.52 × 42,306,648.66
  4. Step 4: Simplify right side
    76,833,987.72x = 4,873,716,894,008,643
  5. Step 5: Solve for x
    x = 4,873,716,894,008,643/76,833,987.72
  6. Step 6: Final answer
    x = 63,431,783.75

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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.