Home / 85,856.20-128,784.30-23,526.70

Finding the Fourth Proportional to 85,856.20, 128,784.30 and 23,526.70

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Solution

The fourth proportional to 85,856.20, 128,784.30 and 23,526.70 is: 35,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.20 : 128,784.30 = 23,526.70 : x
  2. Step 2: Convert to fraction form
    85,856.20/128,784.30 = 23,526.70/x
  3. Step 3: Cross multiply
    85,856.20x = 128,784.30 × 23,526.70
  4. Step 4: Simplify right side
    85,856.20x = 3,029,869,590.81
  5. Step 5: Solve for x
    x = 3,029,869,590.81/85,856.20
  6. Step 6: Final answer
    x = 35,290.05

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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.