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Finding the Fourth Proportional to 70,669.60, 106,004.40 and 31,184.80

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Solution

The fourth proportional to 70,669.60, 106,004.40 and 31,184.80 is: 46,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,669.60 : 106,004.40 = 31,184.80 : x
  2. Step 2: Convert to fraction form
    70,669.60/106,004.40 = 31,184.80/x
  3. Step 3: Cross multiply
    70,669.60x = 106,004.40 × 31,184.80
  4. Step 4: Simplify right side
    70,669.60x = 3,305,726,013.12
  5. Step 5: Solve for x
    x = 3,305,726,013.12/70,669.60
  6. Step 6: Final answer
    x = 46,777.20

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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.