Home / 70,109,999.20-105,164,998.80-39,876,911.20

Finding the Fourth Proportional to 70,109,999.20, 105,164,998.80 and 39,876,911.20

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Solution

The fourth proportional to 70,109,999.20, 105,164,998.80 and 39,876,911.20 is: 59,815,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,109,999.20 : 105,164,998.80 = 39,876,911.20 : x
  2. Step 2: Convert to fraction form
    70,109,999.20/105,164,998.80 = 39,876,911.20/x
  3. Step 3: Cross multiply
    70,109,999.20x = 105,164,998.80 × 39,876,911.20
  4. Step 4: Simplify right side
    70,109,999.20x = 4,193,655,318,495,707
  5. Step 5: Solve for x
    x = 4,193,655,318,495,707/70,109,999.20
  6. Step 6: Final answer
    x = 59,815,366.80

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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.