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Finding the Fourth Proportional to 56,432.67, 77,875.95 and 30,939.09

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Solution

The fourth proportional to 56,432.67, 77,875.95 and 30,939.09 is: 42,695.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,432.67 : 77,875.95 = 30,939.09 : x
  2. Step 2: Convert to fraction form
    56,432.67/77,875.95 = 30,939.09/x
  3. Step 3: Cross multiply
    56,432.67x = 77,875.95 × 30,939.09
  4. Step 4: Simplify right side
    56,432.67x = 2,409,411,025.89
  5. Step 5: Solve for x
    x = 2,409,411,025.89/56,432.67
  6. Step 6: Final answer
    x = 42,695.32

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