Home / 85,545.08-128,315.46-23,213.96

Finding the Fourth Proportional to 85,545.08, 128,315.46 and 23,213.96

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Solution

The fourth proportional to 85,545.08, 128,315.46 and 23,213.96 is: 34,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,545.08 : 128,315.46 = 23,213.96 : x
  2. Step 2: Convert to fraction form
    85,545.08/128,315.46 = 23,213.96/x
  3. Step 3: Cross multiply
    85,545.08x = 128,315.46 × 23,213.96
  4. Step 4: Simplify right side
    85,545.08x = 2,978,709,955.82
  5. Step 5: Solve for x
    x = 2,978,709,955.82/85,545.08
  6. Step 6: Final answer
    x = 34,820.35

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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.