Home / 85,579.47-128,370.96-26,415.18

Finding the Fourth Proportional to 85,579.47, 128,370.96 and 26,415.18

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Solution

The fourth proportional to 85,579.47, 128,370.96 and 26,415.18 is: 39,623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,579.47 : 128,370.96 = 26,415.18 : x
  2. Step 2: Convert to fraction form
    85,579.47/128,370.96 = 26,415.18/x
  3. Step 3: Cross multiply
    85,579.47x = 128,370.96 × 26,415.18
  4. Step 4: Simplify right side
    85,579.47x = 3,390,942,015.17
  5. Step 5: Solve for x
    x = 3,390,942,015.17/85,579.47
  6. Step 6: Final answer
    x = 39,623.31

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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.