Home / 72,205,221.84-108,312,363.36-20,393,881.38

Finding the Fourth Proportional to 72,205,221.84, 108,312,363.36 and 20,393,881.38

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Solution

The fourth proportional to 72,205,221.84, 108,312,363.36 and 20,393,881.38 is: 30,592,101.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,205,221.84 : 108,312,363.36 = 20,393,881.38 : x
  2. Step 2: Convert to fraction form
    72,205,221.84/108,312,363.36 = 20,393,881.38/x
  3. Step 3: Cross multiply
    72,205,221.84x = 108,312,363.36 × 20,393,881.38
  4. Step 4: Simplify right side
    72,205,221.84x = 2,208,909,490,351,298
  5. Step 5: Solve for x
    x = 2,208,909,490,351,298/72,205,221.84
  6. Step 6: Final answer
    x = 30,592,101.71

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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.