Home / 85,433.60-128,152.43-26,269.81

Finding the Fourth Proportional to 85,433.60, 128,152.43 and 26,269.81

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Solution

The fourth proportional to 85,433.60, 128,152.43 and 26,269.81 is: 39,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433.60 : 128,152.43 = 26,269.81 : x
  2. Step 2: Convert to fraction form
    85,433.60/128,152.43 = 26,269.81/x
  3. Step 3: Cross multiply
    85,433.60x = 128,152.43 × 26,269.81
  4. Step 4: Simplify right side
    85,433.60x = 3,366,539,987.14
  5. Step 5: Solve for x
    x = 3,366,539,987.14/85,433.60
  6. Step 6: Final answer
    x = 39,405.34

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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.