Home / 85,407.50-128,188.99-45,460.02

Finding the Fourth Proportional to 85,407.50, 128,188.99 and 45,460.02

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Solution

The fourth proportional to 85,407.50, 128,188.99 and 45,460.02 is: 68,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407.50 : 128,188.99 = 45,460.02 : x
  2. Step 2: Convert to fraction form
    85,407.50/128,188.99 = 45,460.02/x
  3. Step 3: Cross multiply
    85,407.50x = 128,188.99 × 45,460.02
  4. Step 4: Simplify right side
    85,407.50x = 5,827,474,049.18
  5. Step 5: Solve for x
    x = 5,827,474,049.18/85,407.50
  6. Step 6: Final answer
    x = 68,231.41

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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.