Home / 85,779.03-128,526.27-60,694.74

Finding the Fourth Proportional to 85,779.03, 128,526.27 and 60,694.74

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Solution

The fourth proportional to 85,779.03, 128,526.27 and 60,694.74 is: 90,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.03 : 128,526.27 = 60,694.74 : x
  2. Step 2: Convert to fraction form
    85,779.03/128,526.27 = 60,694.74/x
  3. Step 3: Cross multiply
    85,779.03x = 128,526.27 × 60,694.74
  4. Step 4: Simplify right side
    85,779.03x = 7,800,868,540.82
  5. Step 5: Solve for x
    x = 7,800,868,540.82/85,779.03
  6. Step 6: Final answer
    x = 90,941.44

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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.