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Finding the Fourth Proportional to 8,971,548.49, 12,380,578.95 and 5,103,987.22

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Solution

The fourth proportional to 8,971,548.49, 12,380,578.95 and 5,103,987.22 is: 7,043,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,548.49 : 12,380,578.95 = 5,103,987.22 : x
  2. Step 2: Convert to fraction form
    8,971,548.49/12,380,578.95 = 5,103,987.22/x
  3. Step 3: Cross multiply
    8,971,548.49x = 12,380,578.95 × 5,103,987.22
  4. Step 4: Simplify right side
    8,971,548.49x = 63,190,316,737,001.02
  5. Step 5: Solve for x
    x = 63,190,316,737,001.02/8,971,548.49
  6. Step 6: Final answer
    x = 7,043,412.50

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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.