Home / 72,317.26-99,807.78-43,638.40

Finding the Fourth Proportional to 72,317.26, 99,807.78 and 43,638.40

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Solution

The fourth proportional to 72,317.26, 99,807.78 and 43,638.40 is: 60,227.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,317.26 : 99,807.78 = 43,638.40 : x
  2. Step 2: Convert to fraction form
    72,317.26/99,807.78 = 43,638.40/x
  3. Step 3: Cross multiply
    72,317.26x = 99,807.78 × 43,638.40
  4. Step 4: Simplify right side
    72,317.26x = 4,355,451,826.75
  5. Step 5: Solve for x
    x = 4,355,451,826.75/72,317.26
  6. Step 6: Final answer
    x = 60,227.00

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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.