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Finding the Fourth Proportional to 9,991,248.96, 13,788,024.48 and 5,407,668.48

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Solution

The fourth proportional to 9,991,248.96, 13,788,024.48 and 5,407,668.48 is: 7,462,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991,248.96 : 13,788,024.48 = 5,407,668.48 : x
  2. Step 2: Convert to fraction form
    9,991,248.96/13,788,024.48 = 5,407,668.48/x
  3. Step 3: Cross multiply
    9,991,248.96x = 13,788,024.48 × 5,407,668.48
  4. Step 4: Simplify right side
    9,991,248.96x = 74,561,065,381,964.41
  5. Step 5: Solve for x
    x = 74,561,065,381,964.41/9,991,248.96
  6. Step 6: Final answer
    x = 7,462,637.12

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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.