Home / 45,389.60-68,084.40-40,378.40

Finding the Fourth Proportional to 45,389.60, 68,084.40 and 40,378.40

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Solution

The fourth proportional to 45,389.60, 68,084.40 and 40,378.40 is: 60,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,389.60 : 68,084.40 = 40,378.40 : x
  2. Step 2: Convert to fraction form
    45,389.60/68,084.40 = 40,378.40/x
  3. Step 3: Cross multiply
    45,389.60x = 68,084.40 × 40,378.40
  4. Step 4: Simplify right side
    45,389.60x = 2,749,139,136.96
  5. Step 5: Solve for x
    x = 2,749,139,136.96/45,389.60
  6. Step 6: Final answer
    x = 60,567.60

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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.