Home / 72,220,191.84-99,664,057.92-39,180,440.88

Finding the Fourth Proportional to 72,220,191.84, 99,664,057.92 and 39,180,440.88

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Solution

The fourth proportional to 72,220,191.84, 99,664,057.92 and 39,180,440.88 is: 54,069,113.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,191.84 : 99,664,057.92 = 39,180,440.88 : x
  2. Step 2: Convert to fraction form
    72,220,191.84/99,664,057.92 = 39,180,440.88/x
  3. Step 3: Cross multiply
    72,220,191.84x = 99,664,057.92 × 39,180,440.88
  4. Step 4: Simplify right side
    72,220,191.84x = 3,904,881,729,195,456
  5. Step 5: Solve for x
    x = 3,904,881,729,195,456/72,220,191.84
  6. Step 6: Final answer
    x = 54,069,113.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.