Home / 66,075.28-91,180.56-39,218.92

Finding the Fourth Proportional to 66,075.28, 91,180.56 and 39,218.92

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Solution

The fourth proportional to 66,075.28, 91,180.56 and 39,218.92 is: 54,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,075.28 : 91,180.56 = 39,218.92 : x
  2. Step 2: Convert to fraction form
    66,075.28/91,180.56 = 39,218.92/x
  3. Step 3: Cross multiply
    66,075.28x = 91,180.56 × 39,218.92
  4. Step 4: Simplify right side
    66,075.28x = 3,576,003,088.20
  5. Step 5: Solve for x
    x = 3,576,003,088.20/66,075.28
  6. Step 6: Final answer
    x = 54,120.14

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1.5x scale

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.