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Finding the Fourth Proportional to 70,801.36, 106,136.40 and 31,337.44

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Solution

The fourth proportional to 70,801.36, 106,136.40 and 31,337.44 is: 46,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,801.36 : 106,136.40 = 31,337.44 : x
  2. Step 2: Convert to fraction form
    70,801.36/106,136.40 = 31,337.44/x
  3. Step 3: Cross multiply
    70,801.36x = 106,136.40 × 31,337.44
  4. Step 4: Simplify right side
    70,801.36x = 3,326,043,066.82
  5. Step 5: Solve for x
    x = 3,326,043,066.82/70,801.36
  6. Step 6: Final answer
    x = 46,977.11

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1.5x scale

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.