Home / 78,840,048.30-118,260,072.45-21,341,193.90

Finding the Fourth Proportional to 78,840,048.30, 118,260,072.45 and 21,341,193.90

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Solution

The fourth proportional to 78,840,048.30, 118,260,072.45 and 21,341,193.90 is: 32,011,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840,048.30 : 118,260,072.45 = 21,341,193.90 : x
  2. Step 2: Convert to fraction form
    78,840,048.30/118,260,072.45 = 21,341,193.90/x
  3. Step 3: Cross multiply
    78,840,048.30x = 118,260,072.45 × 21,341,193.90
  4. Step 4: Simplify right side
    78,840,048.30x = 2,523,811,136,783,498
  5. Step 5: Solve for x
    x = 2,523,811,136,783,498/78,840,048.30
  6. Step 6: Final answer
    x = 32,011,790.85

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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.