Home / 80,768,515.65-121,155,237.95-31,582,404.51

Finding the Fourth Proportional to 80,768,515.65, 121,155,237.95 and 31,582,404.51

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Solution

The fourth proportional to 80,768,515.65, 121,155,237.95 and 31,582,404.51 is: 47,374,570.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,768,515.65 : 121,155,237.95 = 31,582,404.51 : x
  2. Step 2: Convert to fraction form
    80,768,515.65/121,155,237.95 = 31,582,404.51/x
  3. Step 3: Cross multiply
    80,768,515.65x = 121,155,237.95 × 31,582,404.51
  4. Step 4: Simplify right side
    80,768,515.65x = 3,826,373,733,442,203.50
  5. Step 5: Solve for x
    x = 3,826,373,733,442,203.50/80,768,515.65
  6. Step 6: Final answer
    x = 47,374,570.43

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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.