Home / 45,426.40-68,139.60-45,134.80

Finding the Fourth Proportional to 45,426.40, 68,139.60 and 45,134.80

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Solution

The fourth proportional to 45,426.40, 68,139.60 and 45,134.80 is: 67,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,426.40 : 68,139.60 = 45,134.80 : x
  2. Step 2: Convert to fraction form
    45,426.40/68,139.60 = 45,134.80/x
  3. Step 3: Cross multiply
    45,426.40x = 68,139.60 × 45,134.80
  4. Step 4: Simplify right side
    45,426.40x = 3,075,467,218.08
  5. Step 5: Solve for x
    x = 3,075,467,218.08/45,426.40
  6. Step 6: Final answer
    x = 67,702.20

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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.