Home / 78,725,932.99-118,080,926.50-21,224,016.79

Finding the Fourth Proportional to 78,725,932.99, 118,080,926.50 and 21,224,016.79

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Solution

The fourth proportional to 78,725,932.99, 118,080,926.50 and 21,224,016.79 is: 31,833,875.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,932.99 : 118,080,926.50 = 21,224,016.79 : x
  2. Step 2: Convert to fraction form
    78,725,932.99/118,080,926.50 = 21,224,016.79/x
  3. Step 3: Cross multiply
    78,725,932.99x = 118,080,926.50 × 21,224,016.79
  4. Step 4: Simplify right side
    78,725,932.99x = 2,506,151,566,614,756
  5. Step 5: Solve for x
    x = 2,506,151,566,614,756/78,725,932.99
  6. Step 6: Final answer
    x = 31,833,875.72

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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.