Home / 72,750,780-100,396,085.04-40,155,740.64

Finding the Fourth Proportional to 72,750,780, 100,396,085.04 and 40,155,740.64

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Solution

The fourth proportional to 72,750,780, 100,396,085.04 and 40,155,740.64 is: 55,414,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,750,780 : 100,396,085.04 = 40,155,740.64 : x
  2. Step 2: Convert to fraction form
    72,750,780/100,396,085.04 = 40,155,740.64/x
  3. Step 3: Cross multiply
    72,750,780x = 100,396,085.04 × 40,155,740.64
  4. Step 4: Simplify right side
    72,750,780x = 4,031,479,152,137,624.50
  5. Step 5: Solve for x
    x = 4,031,479,152,137,624.50/72,750,780
  6. Step 6: Final answer
    x = 55,414,926.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.