Home / 81,945.81-122,966.51-34,557.98

Finding the Fourth Proportional to 81,945.81, 122,966.51 and 34,557.98

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Solution

The fourth proportional to 81,945.81, 122,966.51 and 34,557.98 is: 51,857.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,945.81 : 122,966.51 = 34,557.98 : x
  2. Step 2: Convert to fraction form
    81,945.81/122,966.51 = 34,557.98/x
  3. Step 3: Cross multiply
    81,945.81x = 122,966.51 × 34,557.98
  4. Step 4: Simplify right side
    81,945.81x = 4,249,473,405.63
  5. Step 5: Solve for x
    x = 4,249,473,405.63/81,945.81
  6. Step 6: Final answer
    x = 51,857.12

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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.