Home / 72,148.67-99,564.43-40,317.57

Finding the Fourth Proportional to 72,148.67, 99,564.43 and 40,317.57

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Solution

The fourth proportional to 72,148.67, 99,564.43 and 40,317.57 is: 55,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.67 : 99,564.43 = 40,317.57 : x
  2. Step 2: Convert to fraction form
    72,148.67/99,564.43 = 40,317.57/x
  3. Step 3: Cross multiply
    72,148.67x = 99,564.43 × 40,317.57
  4. Step 4: Simplify right side
    72,148.67x = 4,014,195,964.23
  5. Step 5: Solve for x
    x = 4,014,195,964.23/72,148.67
  6. Step 6: Final answer
    x = 55,637.84

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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.