Home / 85,382.08-128,069.76-26,214.72

Finding the Fourth Proportional to 85,382.08, 128,069.76 and 26,214.72

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Solution

The fourth proportional to 85,382.08, 128,069.76 and 26,214.72 is: 39,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,382.08 : 128,069.76 = 26,214.72 : x
  2. Step 2: Convert to fraction form
    85,382.08/128,069.76 = 26,214.72/x
  3. Step 3: Cross multiply
    85,382.08x = 128,069.76 × 26,214.72
  4. Step 4: Simplify right side
    85,382.08x = 3,357,312,898.87
  5. Step 5: Solve for x
    x = 3,357,312,898.87/85,382.08
  6. Step 6: Final answer
    x = 39,321.05

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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.