Home / 85,514.40-128,271.60-35,577.90

Finding the Fourth Proportional to 85,514.40, 128,271.60 and 35,577.90

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Solution

The fourth proportional to 85,514.40, 128,271.60 and 35,577.90 is: 53,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,514.40 : 128,271.60 = 35,577.90 : x
  2. Step 2: Convert to fraction form
    85,514.40/128,271.60 = 35,577.90/x
  3. Step 3: Cross multiply
    85,514.40x = 128,271.60 × 35,577.90
  4. Step 4: Simplify right side
    85,514.40x = 4,563,634,157.64
  5. Step 5: Solve for x
    x = 4,563,634,157.64/85,514.40
  6. Step 6: Final answer
    x = 53,366.85

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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.