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Finding the Fourth Proportional to 85,161.56, 127,501.37 and 45,089.51

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Solution

The fourth proportional to 85,161.56, 127,501.37 and 45,089.51 is: 67,506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,161.56 : 127,501.37 = 45,089.51 : x
  2. Step 2: Convert to fraction form
    85,161.56/127,501.37 = 45,089.51/x
  3. Step 3: Cross multiply
    85,161.56x = 127,501.37 × 45,089.51
  4. Step 4: Simplify right side
    85,161.56x = 5,748,974,072.18
  5. Step 5: Solve for x
    x = 5,748,974,072.18/85,161.56
  6. Step 6: Final answer
    x = 67,506.68

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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.