Home / 80,533,636.61-120,799,683.05-47,720,585.57

Finding the Fourth Proportional to 80,533,636.61, 120,799,683.05 and 47,720,585.57

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Solution

The fourth proportional to 80,533,636.61, 120,799,683.05 and 47,720,585.57 is: 71,580,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,533,636.61 : 120,799,683.05 = 47,720,585.57 : x
  2. Step 2: Convert to fraction form
    80,533,636.61/120,799,683.05 = 47,720,585.57/x
  3. Step 3: Cross multiply
    80,533,636.61x = 120,799,683.05 × 47,720,585.57
  4. Step 4: Simplify right side
    80,533,636.61x = 5,764,631,610,973,802
  5. Step 5: Solve for x
    x = 5,764,631,610,973,802/80,533,636.61
  6. Step 6: Final answer
    x = 71,580,420.98

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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.