Home / 45,193.12-68,136.40-42,144.20

Finding the Fourth Proportional to 45,193.12, 68,136.40 and 42,144.20

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Solution

The fourth proportional to 45,193.12, 68,136.40 and 42,144.20 is: 63,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,193.12 : 68,136.40 = 42,144.20 : x
  2. Step 2: Convert to fraction form
    45,193.12/68,136.40 = 42,144.20/x
  3. Step 3: Cross multiply
    45,193.12x = 68,136.40 × 42,144.20
  4. Step 4: Simplify right side
    45,193.12x = 2,871,554,068.88
  5. Step 5: Solve for x
    x = 2,871,554,068.88/45,193.12
  6. Step 6: Final answer
    x = 63,539.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.