Home / 85,528.10-128,313.25-29,369.05

Finding the Fourth Proportional to 85,528.10, 128,313.25 and 29,369.05

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Solution

The fourth proportional to 85,528.10, 128,313.25 and 29,369.05 is: 44,060.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,528.10 : 128,313.25 = 29,369.05 : x
  2. Step 2: Convert to fraction form
    85,528.10/128,313.25 = 29,369.05/x
  3. Step 3: Cross multiply
    85,528.10x = 128,313.25 × 29,369.05
  4. Step 4: Simplify right side
    85,528.10x = 3,768,437,860.71
  5. Step 5: Solve for x
    x = 3,768,437,860.71/85,528.10
  6. Step 6: Final answer
    x = 44,060.81

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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.