Home / 72,503,138.40-108,754,707.60-40,254,511.20

Finding the Fourth Proportional to 72,503,138.40, 108,754,707.60 and 40,254,511.20

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Solution

The fourth proportional to 72,503,138.40, 108,754,707.60 and 40,254,511.20 is: 60,381,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503,138.40 : 108,754,707.60 = 40,254,511.20 : x
  2. Step 2: Convert to fraction form
    72,503,138.40/108,754,707.60 = 40,254,511.20/x
  3. Step 3: Cross multiply
    72,503,138.40x = 108,754,707.60 × 40,254,511.20
  4. Step 4: Simplify right side
    72,503,138.40x = 4,377,867,595,136,925
  5. Step 5: Solve for x
    x = 4,377,867,595,136,925/72,503,138.40
  6. Step 6: Final answer
    x = 60,381,766.80

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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.