Home / 85,927.28-128,890.69-48,470.35

Finding the Fourth Proportional to 85,927.28, 128,890.69 and 48,470.35

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Solution

The fourth proportional to 85,927.28, 128,890.69 and 48,470.35 is: 72,705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,927.28 : 128,890.69 = 48,470.35 : x
  2. Step 2: Convert to fraction form
    85,927.28/128,890.69 = 48,470.35/x
  3. Step 3: Cross multiply
    85,927.28x = 128,890.69 × 48,470.35
  4. Step 4: Simplify right side
    85,927.28x = 6,247,375,969.24
  5. Step 5: Solve for x
    x = 6,247,375,969.24/85,927.28
  6. Step 6: Final answer
    x = 72,705.39

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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.