Home / 71,781,213.20-107,671,819.80-28,657,072.40

Finding the Fourth Proportional to 71,781,213.20, 107,671,819.80 and 28,657,072.40

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Solution

The fourth proportional to 71,781,213.20, 107,671,819.80 and 28,657,072.40 is: 42,985,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,781,213.20 : 107,671,819.80 = 28,657,072.40 : x
  2. Step 2: Convert to fraction form
    71,781,213.20/107,671,819.80 = 28,657,072.40/x
  3. Step 3: Cross multiply
    71,781,213.20x = 107,671,819.80 × 28,657,072.40
  4. Step 4: Simplify right side
    71,781,213.20x = 3,085,559,135,448,353.50
  5. Step 5: Solve for x
    x = 3,085,559,135,448,353.50/71,781,213.20
  6. Step 6: Final answer
    x = 42,985,608.60

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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.