Home / 72,155.81-99,573.20-40,324.94

Finding the Fourth Proportional to 72,155.81, 99,573.20 and 40,324.94

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Solution

The fourth proportional to 72,155.81, 99,573.20 and 40,324.94 is: 55,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,155.81 : 99,573.20 = 40,324.94 : x
  2. Step 2: Convert to fraction form
    72,155.81/99,573.20 = 40,324.94/x
  3. Step 3: Cross multiply
    72,155.81x = 99,573.20 × 40,324.94
  4. Step 4: Simplify right side
    72,155.81x = 4,015,283,140.74
  5. Step 5: Solve for x
    x = 4,015,283,140.74/72,155.81
  6. Step 6: Final answer
    x = 55,647.40

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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.