Home / 85,582.08-128,345.80-29,408.64

Finding the Fourth Proportional to 85,582.08, 128,345.80 and 29,408.64

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Solution

The fourth proportional to 85,582.08, 128,345.80 and 29,408.64 is: 44,103.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,582.08 : 128,345.80 = 29,408.64 : x
  2. Step 2: Convert to fraction form
    85,582.08/128,345.80 = 29,408.64/x
  3. Step 3: Cross multiply
    85,582.08x = 128,345.80 × 29,408.64
  4. Step 4: Simplify right side
    85,582.08x = 3,774,475,427.71
  5. Step 5: Solve for x
    x = 3,774,475,427.71/85,582.08
  6. Step 6: Final answer
    x = 44,103.57

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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.