Home / 85,848,617.80-128,728,689.90-31,968,195.40

Finding the Fourth Proportional to 85,848,617.80, 128,728,689.90 and 31,968,195.40

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Solution

The fourth proportional to 85,848,617.80, 128,728,689.90 and 31,968,195.40 is: 47,935,820.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,848,617.80 : 128,728,689.90 = 31,968,195.40 : x
  2. Step 2: Convert to fraction form
    85,848,617.80/128,728,689.90 = 31,968,195.40/x
  3. Step 3: Cross multiply
    85,848,617.80x = 128,728,689.90 × 31,968,195.40
  4. Step 4: Simplify right side
    85,848,617.80x = 4,115,223,912,309,206.50
  5. Step 5: Solve for x
    x = 4,115,223,912,309,206.50/85,848,617.80
  6. Step 6: Final answer
    x = 47,935,820.26

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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.