Home / 71,534,578.32-98,720,099.58-40,178,144.46

Finding the Fourth Proportional to 71,534,578.32, 98,720,099.58 and 40,178,144.46

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Solution

The fourth proportional to 71,534,578.32, 98,720,099.58 and 40,178,144.46 is: 55,447,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,534,578.32 : 98,720,099.58 = 40,178,144.46 : x
  2. Step 2: Convert to fraction form
    71,534,578.32/98,720,099.58 = 40,178,144.46/x
  3. Step 3: Cross multiply
    71,534,578.32x = 98,720,099.58 × 40,178,144.46
  4. Step 4: Simplify right side
    71,534,578.32x = 3,966,390,422,030,825.50
  5. Step 5: Solve for x
    x = 3,966,390,422,030,825.50/71,534,578.32
  6. Step 6: Final answer
    x = 55,447,176.95

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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.