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Finding the Fourth Proportional to 85,561.40, 128,342.10 and 35,624.90

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Solution

The fourth proportional to 85,561.40, 128,342.10 and 35,624.90 is: 53,437.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,561.40 : 128,342.10 = 35,624.90 : x
  2. Step 2: Convert to fraction form
    85,561.40/128,342.10 = 35,624.90/x
  3. Step 3: Cross multiply
    85,561.40x = 128,342.10 × 35,624.90
  4. Step 4: Simplify right side
    85,561.40x = 4,572,174,478.29
  5. Step 5: Solve for x
    x = 4,572,174,478.29/85,561.40
  6. Step 6: Final answer
    x = 53,437.35

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