Home / 72,811.12-100,226.64-62,772.80

Finding the Fourth Proportional to 72,811.12, 100,226.64 and 62,772.80

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Solution

The fourth proportional to 72,811.12, 100,226.64 and 62,772.80 is: 86,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,811.12 : 100,226.64 = 62,772.80 : x
  2. Step 2: Convert to fraction form
    72,811.12/100,226.64 = 62,772.80/x
  3. Step 3: Cross multiply
    72,811.12x = 100,226.64 × 62,772.80
  4. Step 4: Simplify right side
    72,811.12x = 6,291,506,827.39
  5. Step 5: Solve for x
    x = 6,291,506,827.39/72,811.12
  6. Step 6: Final answer
    x = 86,408.60

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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.