Home / 68,719.02-103,103.10-42,393.12

Finding the Fourth Proportional to 68,719.02, 103,103.10 and 42,393.12

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Solution

The fourth proportional to 68,719.02, 103,103.10 and 42,393.12 is: 63,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.02 : 103,103.10 = 42,393.12 : x
  2. Step 2: Convert to fraction form
    68,719.02/103,103.10 = 42,393.12/x
  3. Step 3: Cross multiply
    68,719.02x = 103,103.10 × 42,393.12
  4. Step 4: Simplify right side
    68,719.02x = 4,370,862,090.67
  5. Step 5: Solve for x
    x = 4,370,862,090.67/68,719.02
  6. Step 6: Final answer
    x = 63,604.84

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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.