Home / 45,812.40-68,718.60-21,188.40

Finding the Fourth Proportional to 45,812.40, 68,718.60 and 21,188.40

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Solution

The fourth proportional to 45,812.40, 68,718.60 and 21,188.40 is: 31,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,812.40 : 68,718.60 = 21,188.40 : x
  2. Step 2: Convert to fraction form
    45,812.40/68,718.60 = 21,188.40/x
  3. Step 3: Cross multiply
    45,812.40x = 68,718.60 × 21,188.40
  4. Step 4: Simplify right side
    45,812.40x = 1,456,037,184.24
  5. Step 5: Solve for x
    x = 1,456,037,184.24/45,812.40
  6. Step 6: Final answer
    x = 31,782.60

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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.