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Finding the Fourth Proportional to 85,559.72, 128,361.44 and 35,623.22

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Solution

The fourth proportional to 85,559.72, 128,361.44 and 35,623.22 is: 53,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,559.72 : 128,361.44 = 35,623.22 : x
  2. Step 2: Convert to fraction form
    85,559.72/128,361.44 = 35,623.22/x
  3. Step 3: Cross multiply
    85,559.72x = 128,361.44 × 35,623.22
  4. Step 4: Simplify right side
    85,559.72x = 4,572,646,996.71
  5. Step 5: Solve for x
    x = 4,572,646,996.71/85,559.72
  6. Step 6: Final answer
    x = 53,443.93

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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.