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Finding the Fourth Proportional to 8,869,888.72, 12,239,713.30 and 5,003,360.20

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Solution

The fourth proportional to 8,869,888.72, 12,239,713.30 and 5,003,360.20 is: 6,904,223.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869,888.72 : 12,239,713.30 = 5,003,360.20 : x
  2. Step 2: Convert to fraction form
    8,869,888.72/12,239,713.30 = 5,003,360.20/x
  3. Step 3: Cross multiply
    8,869,888.72x = 12,239,713.30 × 5,003,360.20
  4. Step 4: Simplify right side
    8,869,888.72x = 61,239,694,298,415.30
  5. Step 5: Solve for x
    x = 61,239,694,298,415.30/8,869,888.72
  6. Step 6: Final answer
    x = 6,904,223.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.