Home / 78,268,267.80-117,402,401.70-49,168,920.60

Finding the Fourth Proportional to 78,268,267.80, 117,402,401.70 and 49,168,920.60

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Solution

The fourth proportional to 78,268,267.80, 117,402,401.70 and 49,168,920.60 is: 73,753,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,268,267.80 : 117,402,401.70 = 49,168,920.60 : x
  2. Step 2: Convert to fraction form
    78,268,267.80/117,402,401.70 = 49,168,920.60/x
  3. Step 3: Cross multiply
    78,268,267.80x = 117,402,401.70 × 49,168,920.60
  4. Step 4: Simplify right side
    78,268,267.80x = 5,772,549,367,436,605
  5. Step 5: Solve for x
    x = 5,772,549,367,436,605/78,268,267.80
  6. Step 6: Final answer
    x = 73,753,380.90

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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.