Home / 71,928,148.80-107,892,223.20-65,976,009.60

Finding the Fourth Proportional to 71,928,148.80, 107,892,223.20 and 65,976,009.60

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Solution

The fourth proportional to 71,928,148.80, 107,892,223.20 and 65,976,009.60 is: 98,964,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928,148.80 : 107,892,223.20 = 65,976,009.60 : x
  2. Step 2: Convert to fraction form
    71,928,148.80/107,892,223.20 = 65,976,009.60/x
  3. Step 3: Cross multiply
    71,928,148.80x = 107,892,223.20 × 65,976,009.60
  4. Step 4: Simplify right side
    71,928,148.80x = 7,118,298,353,608,543
  5. Step 5: Solve for x
    x = 7,118,298,353,608,543/71,928,148.80
  6. Step 6: Final answer
    x = 98,964,014.40

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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.