Home / 85,749.98-128,637.43-26,590.42

Finding the Fourth Proportional to 85,749.98, 128,637.43 and 26,590.42

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Solution

The fourth proportional to 85,749.98, 128,637.43 and 26,590.42 is: 39,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,749.98 : 128,637.43 = 26,590.42 : x
  2. Step 2: Convert to fraction form
    85,749.98/128,637.43 = 26,590.42/x
  3. Step 3: Cross multiply
    85,749.98x = 128,637.43 × 26,590.42
  4. Step 4: Simplify right side
    85,749.98x = 3,420,522,903.35
  5. Step 5: Solve for x
    x = 3,420,522,903.35/85,749.98
  6. Step 6: Final answer
    x = 39,889.49

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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.