Home / 72,154.60-99,583.14-40,325.80

Finding the Fourth Proportional to 72,154.60, 99,583.14 and 40,325.80

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Solution

The fourth proportional to 72,154.60, 99,583.14 and 40,325.80 is: 55,655.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.60 : 99,583.14 = 40,325.80 : x
  2. Step 2: Convert to fraction form
    72,154.60/99,583.14 = 40,325.80/x
  3. Step 3: Cross multiply
    72,154.60x = 99,583.14 × 40,325.80
  4. Step 4: Simplify right side
    72,154.60x = 4,015,769,787.01
  5. Step 5: Solve for x
    x = 4,015,769,787.01/72,154.60
  6. Step 6: Final answer
    x = 55,655.08

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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.