Home / 90,638.40-135,957.60-62,644.80

Finding the Fourth Proportional to 90,638.40, 135,957.60 and 62,644.80

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Solution

The fourth proportional to 90,638.40, 135,957.60 and 62,644.80 is: 93,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.40 : 135,957.60 = 62,644.80 : x
  2. Step 2: Convert to fraction form
    90,638.40/135,957.60 = 62,644.80/x
  3. Step 3: Cross multiply
    90,638.40x = 135,957.60 × 62,644.80
  4. Step 4: Simplify right side
    90,638.40x = 8,517,036,660.48
  5. Step 5: Solve for x
    x = 8,517,036,660.48/90,638.40
  6. Step 6: Final answer
    x = 93,967.20

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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.