Home / 78,986,447.44-118,484,869.68-20,695,552.72

Finding the Fourth Proportional to 78,986,447.44, 118,484,869.68 and 20,695,552.72

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Solution

The fourth proportional to 78,986,447.44, 118,484,869.68 and 20,695,552.72 is: 31,044,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,447.44 : 118,484,869.68 = 20,695,552.72 : x
  2. Step 2: Convert to fraction form
    78,986,447.44/118,484,869.68 = 20,695,552.72/x
  3. Step 3: Cross multiply
    78,986,447.44x = 118,484,869.68 × 20,695,552.72
  4. Step 4: Simplify right side
    78,986,447.44x = 2,452,109,866,984,769.50
  5. Step 5: Solve for x
    x = 2,452,109,866,984,769.50/78,986,447.44
  6. Step 6: Final answer
    x = 31,044,691.16

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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.