Home / 28,319,001.76-42,478,748.47-9,149,760.86

Finding the Fourth Proportional to 28,319,001.76, 42,478,748.47 and 9,149,760.86

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Solution

The fourth proportional to 28,319,001.76, 42,478,748.47 and 9,149,760.86 is: 13,724,720.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319,001.76 : 42,478,748.47 = 9,149,760.86 : x
  2. Step 2: Convert to fraction form
    28,319,001.76/42,478,748.47 = 9,149,760.86/x
  3. Step 3: Cross multiply
    28,319,001.76x = 42,478,748.47 × 9,149,760.86
  4. Step 4: Simplify right side
    28,319,001.76x = 388,670,390,109,716.44
  5. Step 5: Solve for x
    x = 388,670,390,109,716.44/28,319,001.76
  6. Step 6: Final answer
    x = 13,724,720.72

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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.