Home / 78,986,406.58-118,484,808.55-20,695,511.90

Finding the Fourth Proportional to 78,986,406.58, 118,484,808.55 and 20,695,511.90

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Solution

The fourth proportional to 78,986,406.58, 118,484,808.55 and 20,695,511.90 is: 31,044,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,406.58 : 118,484,808.55 = 20,695,511.90 : x
  2. Step 2: Convert to fraction form
    78,986,406.58/118,484,808.55 = 20,695,511.90/x
  3. Step 3: Cross multiply
    78,986,406.58x = 118,484,808.55 × 20,695,511.90
  4. Step 4: Simplify right side
    78,986,406.58x = 2,452,103,765,560,220
  5. Step 5: Solve for x
    x = 2,452,103,765,560,220/78,986,406.58
  6. Step 6: Final answer
    x = 31,044,629.98

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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.