Home / 45,905.30-68,712.15-42,406.10

Finding the Fourth Proportional to 45,905.30, 68,712.15 and 42,406.10

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Solution

The fourth proportional to 45,905.30, 68,712.15 and 42,406.10 is: 63,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.30 : 68,712.15 = 42,406.10 : x
  2. Step 2: Convert to fraction form
    45,905.30/68,712.15 = 42,406.10/x
  3. Step 3: Cross multiply
    45,905.30x = 68,712.15 × 42,406.10
  4. Step 4: Simplify right side
    45,905.30x = 2,913,814,304.12
  5. Step 5: Solve for x
    x = 2,913,814,304.12/45,905.30
  6. Step 6: Final answer
    x = 63,474.46

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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.