Home / 88,303.86-121,858.41-65,743.74

Finding the Fourth Proportional to 88,303.86, 121,858.41 and 65,743.74

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Solution

The fourth proportional to 88,303.86, 121,858.41 and 65,743.74 is: 90,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,303.86 : 121,858.41 = 65,743.74 : x
  2. Step 2: Convert to fraction form
    88,303.86/121,858.41 = 65,743.74/x
  3. Step 3: Cross multiply
    88,303.86x = 121,858.41 × 65,743.74
  4. Step 4: Simplify right side
    88,303.86x = 8,011,427,623.85
  5. Step 5: Solve for x
    x = 8,011,427,623.85/88,303.86
  6. Step 6: Final answer
    x = 90,725.68

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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.