Home / 91,361.24-126,078-51,075.08

Finding the Fourth Proportional to 91,361.24, 126,078 and 51,075.08

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Solution

The fourth proportional to 91,361.24, 126,078 and 51,075.08 is: 70,483.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.24 : 126,078 = 51,075.08 : x
  2. Step 2: Convert to fraction form
    91,361.24/126,078 = 51,075.08/x
  3. Step 3: Cross multiply
    91,361.24x = 126,078 × 51,075.08
  4. Step 4: Simplify right side
    91,361.24x = 6,439,443,936.24
  5. Step 5: Solve for x
    x = 6,439,443,936.24/91,361.24
  6. Step 6: Final answer
    x = 70,483.32

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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.