Home / 85,921.20-128,914.65-48,523.50

Finding the Fourth Proportional to 85,921.20, 128,914.65 and 48,523.50

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Solution

The fourth proportional to 85,921.20, 128,914.65 and 48,523.50 is: 72,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,921.20 : 128,914.65 = 48,523.50 : x
  2. Step 2: Convert to fraction form
    85,921.20/128,914.65 = 48,523.50/x
  3. Step 3: Cross multiply
    85,921.20x = 128,914.65 × 48,523.50
  4. Step 4: Simplify right side
    85,921.20x = 6,255,390,019.28
  5. Step 5: Solve for x
    x = 6,255,390,019.28/85,921.20
  6. Step 6: Final answer
    x = 72,803.80

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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.