Home / 45,700.02-68,551.47-12,420

Finding the Fourth Proportional to 45,700.02, 68,551.47 and 12,420

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Solution

The fourth proportional to 45,700.02, 68,551.47 and 12,420 is: 18,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,700.02 : 68,551.47 = 12,420 : x
  2. Step 2: Convert to fraction form
    45,700.02/68,551.47 = 12,420/x
  3. Step 3: Cross multiply
    45,700.02x = 68,551.47 × 12,420
  4. Step 4: Simplify right side
    45,700.02x = 851,409,257.40
  5. Step 5: Solve for x
    x = 851,409,257.40/45,700.02
  6. Step 6: Final answer
    x = 18,630.39

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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.