Home / 75,075.40-112,548.30-38,139.40

Finding the Fourth Proportional to 75,075.40, 112,548.30 and 38,139.40

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Solution

The fourth proportional to 75,075.40, 112,548.30 and 38,139.40 is: 57,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,075.40 : 112,548.30 = 38,139.40 : x
  2. Step 2: Convert to fraction form
    75,075.40/112,548.30 = 38,139.40/x
  3. Step 3: Cross multiply
    75,075.40x = 112,548.30 × 38,139.40
  4. Step 4: Simplify right side
    75,075.40x = 4,292,524,633.02
  5. Step 5: Solve for x
    x = 4,292,524,633.02/75,075.40
  6. Step 6: Final answer
    x = 57,176.18

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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.