Home / 85,421.44-128,159.57-41,051.40

Finding the Fourth Proportional to 85,421.44, 128,159.57 and 41,051.40

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Solution

The fourth proportional to 85,421.44, 128,159.57 and 41,051.40 is: 61,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,421.44 : 128,159.57 = 41,051.40 : x
  2. Step 2: Convert to fraction form
    85,421.44/128,159.57 = 41,051.40/x
  3. Step 3: Cross multiply
    85,421.44x = 128,159.57 × 41,051.40
  4. Step 4: Simplify right side
    85,421.44x = 5,261,129,771.90
  5. Step 5: Solve for x
    x = 5,261,129,771.90/85,421.44
  6. Step 6: Final answer
    x = 61,590.27

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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.