Home / 72,669,129.04-108,540,447.78-65,741,970.64

Finding the Fourth Proportional to 72,669,129.04, 108,540,447.78 and 65,741,970.64

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Solution

The fourth proportional to 72,669,129.04, 108,540,447.78 and 65,741,970.64 is: 98,193,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,669,129.04 : 108,540,447.78 = 65,741,970.64 : x
  2. Step 2: Convert to fraction form
    72,669,129.04/108,540,447.78 = 65,741,970.64/x
  3. Step 3: Cross multiply
    72,669,129.04x = 108,540,447.78 × 65,741,970.64
  4. Step 4: Simplify right side
    72,669,129.04x = 7,135,662,931,205,213
  5. Step 5: Solve for x
    x = 7,135,662,931,205,213/72,669,129.04
  6. Step 6: Final answer
    x = 98,193,868.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.