Home / 45,387.60-68,032.80-20,423.40

Finding the Fourth Proportional to 45,387.60, 68,032.80 and 20,423.40

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Solution

The fourth proportional to 45,387.60, 68,032.80 and 20,423.40 is: 30,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,387.60 : 68,032.80 = 20,423.40 : x
  2. Step 2: Convert to fraction form
    45,387.60/68,032.80 = 20,423.40/x
  3. Step 3: Cross multiply
    45,387.60x = 68,032.80 × 20,423.40
  4. Step 4: Simplify right side
    45,387.60x = 1,389,461,087.52
  5. Step 5: Solve for x
    x = 1,389,461,087.52/45,387.60
  6. Step 6: Final answer
    x = 30,613.23

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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.