Home / 81,871,812.30-122,807,718.45-43,608,060.30

Finding the Fourth Proportional to 81,871,812.30, 122,807,718.45 and 43,608,060.30

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Solution

The fourth proportional to 81,871,812.30, 122,807,718.45 and 43,608,060.30 is: 65,412,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,871,812.30 : 122,807,718.45 = 43,608,060.30 : x
  2. Step 2: Convert to fraction form
    81,871,812.30/122,807,718.45 = 43,608,060.30/x
  3. Step 3: Cross multiply
    81,871,812.30x = 122,807,718.45 × 43,608,060.30
  4. Step 4: Simplify right side
    81,871,812.30x = 5,355,406,391,473,022
  5. Step 5: Solve for x
    x = 5,355,406,391,473,022/81,871,812.30
  6. Step 6: Final answer
    x = 65,412,090.45

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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.