Home / 70,123,982.10-105,185,971.53-19,005,999.90

Finding the Fourth Proportional to 70,123,982.10, 105,185,971.53 and 19,005,999.90

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Solution

The fourth proportional to 70,123,982.10, 105,185,971.53 and 19,005,999.90 is: 28,508,999.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,123,982.10 : 105,185,971.53 = 19,005,999.90 : x
  2. Step 2: Convert to fraction form
    70,123,982.10/105,185,971.53 = 19,005,999.90/x
  3. Step 3: Cross multiply
    70,123,982.10x = 105,185,971.53 × 19,005,999.90
  4. Step 4: Simplify right side
    70,123,982.10x = 1,999,164,564,380,582.75
  5. Step 5: Solve for x
    x = 1,999,164,564,380,582.75/70,123,982.10
  6. Step 6: Final answer
    x = 28,508,999.41

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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.