Home / 72,148.55-99,564.77-40,317.44

Finding the Fourth Proportional to 72,148.55, 99,564.77 and 40,317.44

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Solution

The fourth proportional to 72,148.55, 99,564.77 and 40,317.44 is: 55,637.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.55 : 99,564.77 = 40,317.44 : x
  2. Step 2: Convert to fraction form
    72,148.55/99,564.77 = 40,317.44/x
  3. Step 3: Cross multiply
    72,148.55x = 99,564.77 × 40,317.44
  4. Step 4: Simplify right side
    72,148.55x = 4,014,196,439.00
  5. Step 5: Solve for x
    x = 4,014,196,439.00/72,148.55
  6. Step 6: Final answer
    x = 55,637.94

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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.