Home / 85,525.70-128,288.55-26,356.10

Finding the Fourth Proportional to 85,525.70, 128,288.55 and 26,356.10

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Solution

The fourth proportional to 85,525.70, 128,288.55 and 26,356.10 is: 39,534.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,525.70 : 128,288.55 = 26,356.10 : x
  2. Step 2: Convert to fraction form
    85,525.70/128,288.55 = 26,356.10/x
  3. Step 3: Cross multiply
    85,525.70x = 128,288.55 × 26,356.10
  4. Step 4: Simplify right side
    85,525.70x = 3,381,185,852.66
  5. Step 5: Solve for x
    x = 3,381,185,852.66/85,525.70
  6. Step 6: Final answer
    x = 39,534.15

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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.