Home / 72,918,019.40-109,363,032.30-21,801,705.80

Finding the Fourth Proportional to 72,918,019.40, 109,363,032.30 and 21,801,705.80

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Solution

The fourth proportional to 72,918,019.40, 109,363,032.30 and 21,801,705.80 is: 32,698,373.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918,019.40 : 109,363,032.30 = 21,801,705.80 : x
  2. Step 2: Convert to fraction form
    72,918,019.40/109,363,032.30 = 21,801,705.80/x
  3. Step 3: Cross multiply
    72,918,019.40x = 109,363,032.30 × 21,801,705.80
  4. Step 4: Simplify right side
    72,918,019.40x = 2,384,300,655,600,497.50
  5. Step 5: Solve for x
    x = 2,384,300,655,600,497.50/72,918,019.40
  6. Step 6: Final answer
    x = 32,698,373.81

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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.