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Finding the Fourth Proportional to 91,464.54, 136,860.03 and 55,312.07

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Solution

The fourth proportional to 91,464.54, 136,860.03 and 55,312.07 is: 82,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,464.54 : 136,860.03 = 55,312.07 : x
  2. Step 2: Convert to fraction form
    91,464.54/136,860.03 = 55,312.07/x
  3. Step 3: Cross multiply
    91,464.54x = 136,860.03 × 55,312.07
  4. Step 4: Simplify right side
    91,464.54x = 7,570,010,875.26
  5. Step 5: Solve for x
    x = 7,570,010,875.26/91,464.54
  6. Step 6: Final answer
    x = 82,764.43

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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.