Home / 90,941.08-125,578.08-57,008.05

Finding the Fourth Proportional to 90,941.08, 125,578.08 and 57,008.05

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Solution

The fourth proportional to 90,941.08, 125,578.08 and 57,008.05 is: 78,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,941.08 : 125,578.08 = 57,008.05 : x
  2. Step 2: Convert to fraction form
    90,941.08/125,578.08 = 57,008.05/x
  3. Step 3: Cross multiply
    90,941.08x = 125,578.08 × 57,008.05
  4. Step 4: Simplify right side
    90,941.08x = 7,158,960,835.65
  5. Step 5: Solve for x
    x = 7,158,960,835.65/90,941.08
  6. Step 6: Final answer
    x = 78,720.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.