Home / 40,930.40-61,395.60-40,638.80

Finding the Fourth Proportional to 40,930.40, 61,395.60 and 40,638.80

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Solution

The fourth proportional to 40,930.40, 61,395.60 and 40,638.80 is: 60,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,930.40 : 61,395.60 = 40,638.80 : x
  2. Step 2: Convert to fraction form
    40,930.40/61,395.60 = 40,638.80/x
  3. Step 3: Cross multiply
    40,930.40x = 61,395.60 × 40,638.80
  4. Step 4: Simplify right side
    40,930.40x = 2,495,043,509.28
  5. Step 5: Solve for x
    x = 2,495,043,509.28/40,930.40
  6. Step 6: Final answer
    x = 60,958.20

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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.