Home / 81,493,019.40-122,197,538.70-30,348,712.20

Finding the Fourth Proportional to 81,493,019.40, 122,197,538.70 and 30,348,712.20

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Solution

The fourth proportional to 81,493,019.40, 122,197,538.70 and 30,348,712.20 is: 45,507,430.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493,019.40 : 122,197,538.70 = 30,348,712.20 : x
  2. Step 2: Convert to fraction form
    81,493,019.40/122,197,538.70 = 30,348,712.20/x
  3. Step 3: Cross multiply
    81,493,019.40x = 122,197,538.70 × 30,348,712.20
  4. Step 4: Simplify right side
    81,493,019.40x = 3,708,537,933,554,662
  5. Step 5: Solve for x
    x = 3,708,537,933,554,662/81,493,019.40
  6. Step 6: Final answer
    x = 45,507,430.71

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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.