Home / 83,505.10-125,256.58-20,325.32

Finding the Fourth Proportional to 83,505.10, 125,256.58 and 20,325.32

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Solution

The fourth proportional to 83,505.10, 125,256.58 and 20,325.32 is: 30,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,505.10 : 125,256.58 = 20,325.32 : x
  2. Step 2: Convert to fraction form
    83,505.10/125,256.58 = 20,325.32/x
  3. Step 3: Cross multiply
    83,505.10x = 125,256.58 × 20,325.32
  4. Step 4: Simplify right side
    83,505.10x = 2,545,880,070.61
  5. Step 5: Solve for x
    x = 2,545,880,070.61/83,505.10
  6. Step 6: Final answer
    x = 30,487.72

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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.