Home / 72,918,015.40-109,363,026.30-21,801,701.80

Finding the Fourth Proportional to 72,918,015.40, 109,363,026.30 and 21,801,701.80

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Solution

The fourth proportional to 72,918,015.40, 109,363,026.30 and 21,801,701.80 is: 32,698,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918,015.40 : 109,363,026.30 = 21,801,701.80 : x
  2. Step 2: Convert to fraction form
    72,918,015.40/109,363,026.30 = 21,801,701.80/x
  3. Step 3: Cross multiply
    72,918,015.40x = 109,363,026.30 × 21,801,701.80
  4. Step 4: Simplify right side
    72,918,015.40x = 2,384,300,087,338,157.50
  5. Step 5: Solve for x
    x = 2,384,300,087,338,157.50/72,918,015.40
  6. Step 6: Final answer
    x = 32,698,367.81

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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.