Home / 85,536,042.80-128,304,064.20-28,034,126.60

Finding the Fourth Proportional to 85,536,042.80, 128,304,064.20 and 28,034,126.60

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Solution

The fourth proportional to 85,536,042.80, 128,304,064.20 and 28,034,126.60 is: 42,051,189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,042.80 : 128,304,064.20 = 28,034,126.60 : x
  2. Step 2: Convert to fraction form
    85,536,042.80/128,304,064.20 = 28,034,126.60/x
  3. Step 3: Cross multiply
    85,536,042.80x = 128,304,064.20 × 28,034,126.60
  4. Step 4: Simplify right side
    85,536,042.80x = 3,596,892,379,077,328
  5. Step 5: Solve for x
    x = 3,596,892,379,077,328/85,536,042.80
  6. Step 6: Final answer
    x = 42,051,189.90

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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.