Home / 85,260,002.40-127,890,003.60-31,428,309.60

Finding the Fourth Proportional to 85,260,002.40, 127,890,003.60 and 31,428,309.60

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Solution

The fourth proportional to 85,260,002.40, 127,890,003.60 and 31,428,309.60 is: 47,142,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,260,002.40 : 127,890,003.60 = 31,428,309.60 : x
  2. Step 2: Convert to fraction form
    85,260,002.40/127,890,003.60 = 31,428,309.60/x
  3. Step 3: Cross multiply
    85,260,002.40x = 127,890,003.60 × 31,428,309.60
  4. Step 4: Simplify right side
    85,260,002.40x = 4,019,366,627,885,914.50
  5. Step 5: Solve for x
    x = 4,019,366,627,885,914.50/85,260,002.40
  6. Step 6: Final answer
    x = 47,142,464.40

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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.