Home / 81,344,116.74-122,016,077.19-20,759,849.22

Finding the Fourth Proportional to 81,344,116.74, 122,016,077.19 and 20,759,849.22

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Solution

The fourth proportional to 81,344,116.74, 122,016,077.19 and 20,759,849.22 is: 31,139,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344,116.74 : 122,016,077.19 = 20,759,849.22 : x
  2. Step 2: Convert to fraction form
    81,344,116.74/122,016,077.19 = 20,759,849.22/x
  3. Step 3: Cross multiply
    81,344,116.74x = 122,016,077.19 × 20,759,849.22
  4. Step 4: Simplify right side
    81,344,116.74x = 2,533,035,364,880,281
  5. Step 5: Solve for x
    x = 2,533,035,364,880,281/81,344,116.74
  6. Step 6: Final answer
    x = 31,139,748.84

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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.