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Finding the Fourth Proportional to 28,072,693.90, 42,109,040.85 and 8,904,951.10

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Solution

The fourth proportional to 28,072,693.90, 42,109,040.85 and 8,904,951.10 is: 13,357,426.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072,693.90 : 42,109,040.85 = 8,904,951.10 : x
  2. Step 2: Convert to fraction form
    28,072,693.90/42,109,040.85 = 8,904,951.10/x
  3. Step 3: Cross multiply
    28,072,693.90x = 42,109,040.85 × 8,904,951.10
  4. Step 4: Simplify right side
    28,072,693.90x = 374,978,949,637,152.44
  5. Step 5: Solve for x
    x = 374,978,949,637,152.44/28,072,693.90
  6. Step 6: Final answer
    x = 13,357,426.65

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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.