Home / 85,681.38-128,522.07-23,361.06

Finding the Fourth Proportional to 85,681.38, 128,522.07 and 23,361.06

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Solution

The fourth proportional to 85,681.38, 128,522.07 and 23,361.06 is: 35,041.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,681.38 : 128,522.07 = 23,361.06 : x
  2. Step 2: Convert to fraction form
    85,681.38/128,522.07 = 23,361.06/x
  3. Step 3: Cross multiply
    85,681.38x = 128,522.07 × 23,361.06
  4. Step 4: Simplify right side
    85,681.38x = 3,002,411,788.59
  5. Step 5: Solve for x
    x = 3,002,411,788.59/85,681.38
  6. Step 6: Final answer
    x = 35,041.59

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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.