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Finding the Fourth Proportional to 85,415.48, 127,923.81 and 67,525.93

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Solution

The fourth proportional to 85,415.48, 127,923.81 and 67,525.93 is: 101,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,415.48 : 127,923.81 = 67,525.93 : x
  2. Step 2: Convert to fraction form
    85,415.48/127,923.81 = 67,525.93/x
  3. Step 3: Cross multiply
    85,415.48x = 127,923.81 × 67,525.93
  4. Step 4: Simplify right side
    85,415.48x = 8,638,174,239.39
  5. Step 5: Solve for x
    x = 8,638,174,239.39/85,415.48
  6. Step 6: Final answer
    x = 101,131.25

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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.