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Finding the Fourth Proportional to 45,659.90, 68,457.54 and 15,659.75

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Solution

The fourth proportional to 45,659.90, 68,457.54 and 15,659.75 is: 23,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,659.90 : 68,457.54 = 15,659.75 : x
  2. Step 2: Convert to fraction form
    45,659.90/68,457.54 = 15,659.75/x
  3. Step 3: Cross multiply
    45,659.90x = 68,457.54 × 15,659.75
  4. Step 4: Simplify right side
    45,659.90x = 1,072,027,962.02
  5. Step 5: Solve for x
    x = 1,072,027,962.02/45,659.90
  6. Step 6: Final answer
    x = 23,478.54

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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.