Home / 78,986,408.71-118,484,811.74-20,695,514.04

Finding the Fourth Proportional to 78,986,408.71, 118,484,811.74 and 20,695,514.04

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Solution

The fourth proportional to 78,986,408.71, 118,484,811.74 and 20,695,514.04 is: 31,044,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,408.71 : 118,484,811.74 = 20,695,514.04 : x
  2. Step 2: Convert to fraction form
    78,986,408.71/118,484,811.74 = 20,695,514.04/x
  3. Step 3: Cross multiply
    78,986,408.71x = 118,484,811.74 × 20,695,514.04
  4. Step 4: Simplify right side
    78,986,408.71x = 2,452,104,084,891,926.50
  5. Step 5: Solve for x
    x = 2,452,104,084,891,926.50/78,986,408.71
  6. Step 6: Final answer
    x = 31,044,633.18

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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.