Home / 80,939,327.80-121,408,991.70-56,705,618.20

Finding the Fourth Proportional to 80,939,327.80, 121,408,991.70 and 56,705,618.20

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Solution

The fourth proportional to 80,939,327.80, 121,408,991.70 and 56,705,618.20 is: 85,058,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,939,327.80 : 121,408,991.70 = 56,705,618.20 : x
  2. Step 2: Convert to fraction form
    80,939,327.80/121,408,991.70 = 56,705,618.20/x
  3. Step 3: Cross multiply
    80,939,327.80x = 121,408,991.70 × 56,705,618.20
  4. Step 4: Simplify right side
    80,939,327.80x = 6,884,571,929,387,169
  5. Step 5: Solve for x
    x = 6,884,571,929,387,169/80,939,327.80
  6. Step 6: Final answer
    x = 85,058,427.30

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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.