Home / 85,948.08-128,928.33-35,977.83

Finding the Fourth Proportional to 85,948.08, 128,928.33 and 35,977.83

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Solution

The fourth proportional to 85,948.08, 128,928.33 and 35,977.83 is: 53,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,948.08 : 128,928.33 = 35,977.83 : x
  2. Step 2: Convert to fraction form
    85,948.08/128,928.33 = 35,977.83/x
  3. Step 3: Cross multiply
    85,948.08x = 128,928.33 × 35,977.83
  4. Step 4: Simplify right side
    85,948.08x = 4,638,561,538.92
  5. Step 5: Solve for x
    x = 4,638,561,538.92/85,948.08
  6. Step 6: Final answer
    x = 53,969.34

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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.