Home / 85,925.40-128,810.28-30,508.44

Finding the Fourth Proportional to 85,925.40, 128,810.28 and 30,508.44

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Solution

The fourth proportional to 85,925.40, 128,810.28 and 30,508.44 is: 45,735.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,925.40 : 128,810.28 = 30,508.44 : x
  2. Step 2: Convert to fraction form
    85,925.40/128,810.28 = 30,508.44/x
  3. Step 3: Cross multiply
    85,925.40x = 128,810.28 × 30,508.44
  4. Step 4: Simplify right side
    85,925.40x = 3,929,800,698.76
  5. Step 5: Solve for x
    x = 3,929,800,698.76/85,925.40
  6. Step 6: Final answer
    x = 45,735.03

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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.