Home / 72,065,868.90-108,101,792.88-20,947,887.69

Finding the Fourth Proportional to 72,065,868.90, 108,101,792.88 and 20,947,887.69

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Solution

The fourth proportional to 72,065,868.90, 108,101,792.88 and 20,947,887.69 is: 31,422,700.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,065,868.90 : 108,101,792.88 = 20,947,887.69 : x
  2. Step 2: Convert to fraction form
    72,065,868.90/108,101,792.88 = 20,947,887.69/x
  3. Step 3: Cross multiply
    72,065,868.90x = 108,101,792.88 × 20,947,887.69
  4. Step 4: Simplify right side
    72,065,868.90x = 2,264,504,216,337,881.50
  5. Step 5: Solve for x
    x = 2,264,504,216,337,881.50/72,065,868.90
  6. Step 6: Final answer
    x = 31,422,700.52

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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.