Home / 85,385.07-128,081.31-26,223.06

Finding the Fourth Proportional to 85,385.07, 128,081.31 and 26,223.06

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Solution

The fourth proportional to 85,385.07, 128,081.31 and 26,223.06 is: 39,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385.07 : 128,081.31 = 26,223.06 : x
  2. Step 2: Convert to fraction form
    85,385.07/128,081.31 = 26,223.06/x
  3. Step 3: Cross multiply
    85,385.07x = 128,081.31 × 26,223.06
  4. Step 4: Simplify right side
    85,385.07x = 3,358,683,877.01
  5. Step 5: Solve for x
    x = 3,358,683,877.01/85,385.07
  6. Step 6: Final answer
    x = 39,335.73

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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.