Home / 84,006,475.20-126,009,712.80-69,657,568.20

Finding the Fourth Proportional to 84,006,475.20, 126,009,712.80 and 69,657,568.20

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Solution

The fourth proportional to 84,006,475.20, 126,009,712.80 and 69,657,568.20 is: 104,486,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006,475.20 : 126,009,712.80 = 69,657,568.20 : x
  2. Step 2: Convert to fraction form
    84,006,475.20/126,009,712.80 = 69,657,568.20/x
  3. Step 3: Cross multiply
    84,006,475.20x = 126,009,712.80 × 69,657,568.20
  4. Step 4: Simplify right side
    84,006,475.20x = 8,777,530,163,228,413
  5. Step 5: Solve for x
    x = 8,777,530,163,228,413/84,006,475.20
  6. Step 6: Final answer
    x = 104,486,352.30

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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.