Home / 72,762,942.30-109,144,413.45-66,066,785.70

Finding the Fourth Proportional to 72,762,942.30, 109,144,413.45 and 66,066,785.70

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Solution

The fourth proportional to 72,762,942.30, 109,144,413.45 and 66,066,785.70 is: 99,100,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,762,942.30 : 109,144,413.45 = 66,066,785.70 : x
  2. Step 2: Convert to fraction form
    72,762,942.30/109,144,413.45 = 66,066,785.70/x
  3. Step 3: Cross multiply
    72,762,942.30x = 109,144,413.45 × 66,066,785.70
  4. Step 4: Simplify right side
    72,762,942.30x = 7,210,820,573,753,348
  5. Step 5: Solve for x
    x = 7,210,820,573,753,348/72,762,942.30
  6. Step 6: Final answer
    x = 99,100,178.55

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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.