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Finding the Fourth Proportional to 70,060.65, 105,108.57 and 20,140.84

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Solution

The fourth proportional to 70,060.65, 105,108.57 and 20,140.84 is: 30,216.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,060.65 : 105,108.57 = 20,140.84 : x
  2. Step 2: Convert to fraction form
    70,060.65/105,108.57 = 20,140.84/x
  3. Step 3: Cross multiply
    70,060.65x = 105,108.57 × 20,140.84
  4. Step 4: Simplify right side
    70,060.65x = 2,116,974,703.76
  5. Step 5: Solve for x
    x = 2,116,974,703.76/70,060.65
  6. Step 6: Final answer
    x = 30,216.32

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