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Finding the Fourth Proportional to 70,777.90, 106,177.79 and 25,803.06

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Solution

The fourth proportional to 70,777.90, 106,177.79 and 25,803.06 is: 38,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,777.90 : 106,177.79 = 25,803.06 : x
  2. Step 2: Convert to fraction form
    70,777.90/106,177.79 = 25,803.06/x
  3. Step 3: Cross multiply
    70,777.90x = 106,177.79 × 25,803.06
  4. Step 4: Simplify right side
    70,777.90x = 2,739,711,407.24
  5. Step 5: Solve for x
    x = 2,739,711,407.24/70,777.90
  6. Step 6: Final answer
    x = 38,708.57

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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.