Home / 85,128,014.40-127,692,021.60-51,115,790.40

Finding the Fourth Proportional to 85,128,014.40, 127,692,021.60 and 51,115,790.40

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Solution

The fourth proportional to 85,128,014.40, 127,692,021.60 and 51,115,790.40 is: 76,673,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,128,014.40 : 127,692,021.60 = 51,115,790.40 : x
  2. Step 2: Convert to fraction form
    85,128,014.40/127,692,021.60 = 51,115,790.40/x
  3. Step 3: Cross multiply
    85,128,014.40x = 127,692,021.60 × 51,115,790.40
  4. Step 4: Simplify right side
    85,128,014.40x = 6,527,078,611,857,872
  5. Step 5: Solve for x
    x = 6,527,078,611,857,872/85,128,014.40
  6. Step 6: Final answer
    x = 76,673,685.60

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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.