Home / 85,554.20-128,477.10-60,768.20

Finding the Fourth Proportional to 85,554.20, 128,477.10 and 60,768.20

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Solution

The fourth proportional to 85,554.20, 128,477.10 and 60,768.20 is: 91,255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,554.20 : 128,477.10 = 60,768.20 : x
  2. Step 2: Convert to fraction form
    85,554.20/128,477.10 = 60,768.20/x
  3. Step 3: Cross multiply
    85,554.20x = 128,477.10 × 60,768.20
  4. Step 4: Simplify right side
    85,554.20x = 7,807,322,108.22
  5. Step 5: Solve for x
    x = 7,807,322,108.22/85,554.20
  6. Step 6: Final answer
    x = 91,255.86

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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.