Home / 8,077,147.80-12,115,721.70-7,758,283.20

Finding the Fourth Proportional to 8,077,147.80, 12,115,721.70 and 7,758,283.20

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Solution

The fourth proportional to 8,077,147.80, 12,115,721.70 and 7,758,283.20 is: 11,637,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077,147.80 : 12,115,721.70 = 7,758,283.20 : x
  2. Step 2: Convert to fraction form
    8,077,147.80/12,115,721.70 = 7,758,283.20/x
  3. Step 3: Cross multiply
    8,077,147.80x = 12,115,721.70 × 7,758,283.20
  4. Step 4: Simplify right side
    8,077,147.80x = 93,997,200,120,985.44
  5. Step 5: Solve for x
    x = 93,997,200,120,985.44/8,077,147.80
  6. Step 6: Final answer
    x = 11,637,424.80

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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.