Home / 28,296,743.40-42,445,115.10-9,128,125.80

Finding the Fourth Proportional to 28,296,743.40, 42,445,115.10 and 9,128,125.80

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Solution

The fourth proportional to 28,296,743.40, 42,445,115.10 and 9,128,125.80 is: 13,692,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296,743.40 : 42,445,115.10 = 9,128,125.80 : x
  2. Step 2: Convert to fraction form
    28,296,743.40/42,445,115.10 = 9,128,125.80/x
  3. Step 3: Cross multiply
    28,296,743.40x = 42,445,115.10 × 9,128,125.80
  4. Step 4: Simplify right side
    28,296,743.40x = 387,444,350,228,279.62
  5. Step 5: Solve for x
    x = 387,444,350,228,279.62/28,296,743.40
  6. Step 6: Final answer
    x = 13,692,188.70

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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.