Home / 90,783.60-136,013.40-43,933.20

Finding the Fourth Proportional to 90,783.60, 136,013.40 and 43,933.20

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Solution

The fourth proportional to 90,783.60, 136,013.40 and 43,933.20 is: 65,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,783.60 : 136,013.40 = 43,933.20 : x
  2. Step 2: Convert to fraction form
    90,783.60/136,013.40 = 43,933.20/x
  3. Step 3: Cross multiply
    90,783.60x = 136,013.40 × 43,933.20
  4. Step 4: Simplify right side
    90,783.60x = 5,975,503,904.88
  5. Step 5: Solve for x
    x = 5,975,503,904.88/90,783.60
  6. Step 6: Final answer
    x = 65,821.40

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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.