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Finding the Fourth Proportional to 61,431.72, 84,774.72 and 34,574.16

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Solution

The fourth proportional to 61,431.72, 84,774.72 and 34,574.16 is: 47,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,431.72 : 84,774.72 = 34,574.16 : x
  2. Step 2: Convert to fraction form
    61,431.72/84,774.72 = 34,574.16/x
  3. Step 3: Cross multiply
    61,431.72x = 84,774.72 × 34,574.16
  4. Step 4: Simplify right side
    61,431.72x = 2,931,014,733.24
  5. Step 5: Solve for x
    x = 2,931,014,733.24/61,431.72
  6. Step 6: Final answer
    x = 47,711.75

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