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Finding the Fourth Proportional to 85,410.86, 117,873.63 and 62,853.57

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Solution

The fourth proportional to 85,410.86, 117,873.63 and 62,853.57 is: 86,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410.86 : 117,873.63 = 62,853.57 : x
  2. Step 2: Convert to fraction form
    85,410.86/117,873.63 = 62,853.57/x
  3. Step 3: Cross multiply
    85,410.86x = 117,873.63 × 62,853.57
  4. Step 4: Simplify right side
    85,410.86x = 7,408,778,454.36
  5. Step 5: Solve for x
    x = 7,408,778,454.36/85,410.86
  6. Step 6: Final answer
    x = 86,742.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.