Home / 66,190.36-91,364-42,381.16

Finding the Fourth Proportional to 66,190.36, 91,364 and 42,381.16

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Solution

The fourth proportional to 66,190.36, 91,364 and 42,381.16 is: 58,499.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.36 : 91,364 = 42,381.16 : x
  2. Step 2: Convert to fraction form
    66,190.36/91,364 = 42,381.16/x
  3. Step 3: Cross multiply
    66,190.36x = 91,364 × 42,381.16
  4. Step 4: Simplify right side
    66,190.36x = 3,872,112,302.24
  5. Step 5: Solve for x
    x = 3,872,112,302.24/66,190.36
  6. Step 6: Final answer
    x = 58,499.64

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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.