Home / 81,567.38-122,440.57-64,808.12

Finding the Fourth Proportional to 81,567.38, 122,440.57 and 64,808.12

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Solution

The fourth proportional to 81,567.38, 122,440.57 and 64,808.12 is: 97,283.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,567.38 : 122,440.57 = 64,808.12 : x
  2. Step 2: Convert to fraction form
    81,567.38/122,440.57 = 64,808.12/x
  3. Step 3: Cross multiply
    81,567.38x = 122,440.57 × 64,808.12
  4. Step 4: Simplify right side
    81,567.38x = 7,935,143,297.51
  5. Step 5: Solve for x
    x = 7,935,143,297.51/81,567.38
  6. Step 6: Final answer
    x = 97,283.29

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1.5x scale

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.