Home / 72,579,081.40-108,868,622.10-59,813,999.80

Finding the Fourth Proportional to 72,579,081.40, 108,868,622.10 and 59,813,999.80

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Solution

The fourth proportional to 72,579,081.40, 108,868,622.10 and 59,813,999.80 is: 89,720,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,081.40 : 108,868,622.10 = 59,813,999.80 : x
  2. Step 2: Convert to fraction form
    72,579,081.40/108,868,622.10 = 59,813,999.80/x
  3. Step 3: Cross multiply
    72,579,081.40x = 108,868,622.10 × 59,813,999.80
  4. Step 4: Simplify right side
    72,579,081.40x = 6,511,867,740,515,675
  5. Step 5: Solve for x
    x = 6,511,867,740,515,675/72,579,081.40
  6. Step 6: Final answer
    x = 89,720,999.70

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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.