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Finding the Fourth Proportional to 66,130, 91,259.40 and 36,323.92

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Solution

The fourth proportional to 66,130, 91,259.40 and 36,323.92 is: 50,127.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130 : 91,259.40 = 36,323.92 : x
  2. Step 2: Convert to fraction form
    66,130/91,259.40 = 36,323.92/x
  3. Step 3: Cross multiply
    66,130x = 91,259.40 × 36,323.92
  4. Step 4: Simplify right side
    66,130x = 3,314,899,144.85
  5. Step 5: Solve for x
    x = 3,314,899,144.85/66,130
  6. Step 6: Final answer
    x = 50,127.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.