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Finding the Fourth Proportional to 9,991,547.54, 13,788,448.47 and 5,861,649.09

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Solution

The fourth proportional to 9,991,547.54, 13,788,448.47 and 5,861,649.09 is: 8,089,141.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991,547.54 : 13,788,448.47 = 5,861,649.09 : x
  2. Step 2: Convert to fraction form
    9,991,547.54/13,788,448.47 = 5,861,649.09/x
  3. Step 3: Cross multiply
    9,991,547.54x = 13,788,448.47 × 5,861,649.09
  4. Step 4: Simplify right side
    9,991,547.54x = 80,823,046,426,687.39
  5. Step 5: Solve for x
    x = 80,823,046,426,687.39/9,991,547.54
  6. Step 6: Final answer
    x = 8,089,141.96

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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.