Home / 81,492,827.90-122,197,251.45-30,348,520.70

Finding the Fourth Proportional to 81,492,827.90, 122,197,251.45 and 30,348,520.70

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Solution

The fourth proportional to 81,492,827.90, 122,197,251.45 and 30,348,520.70 is: 45,507,143.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492,827.90 : 122,197,251.45 = 30,348,520.70 : x
  2. Step 2: Convert to fraction form
    81,492,827.90/122,197,251.45 = 30,348,520.70/x
  3. Step 3: Cross multiply
    81,492,827.90x = 122,197,251.45 × 30,348,520.70
  4. Step 4: Simplify right side
    81,492,827.90x = 3,708,505,815,113,430
  5. Step 5: Solve for x
    x = 3,708,505,815,113,430/81,492,827.90
  6. Step 6: Final answer
    x = 45,507,143.52

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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.