Home / 72,009.33-99,372.93-40,178.23

Finding the Fourth Proportional to 72,009.33, 99,372.93 and 40,178.23

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Solution

The fourth proportional to 72,009.33, 99,372.93 and 40,178.23 is: 55,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.33 : 99,372.93 = 40,178.23 : x
  2. Step 2: Convert to fraction form
    72,009.33/99,372.93 = 40,178.23/x
  3. Step 3: Cross multiply
    72,009.33x = 99,372.93 × 40,178.23
  4. Step 4: Simplify right side
    72,009.33x = 3,992,628,038.21
  5. Step 5: Solve for x
    x = 3,992,628,038.21/72,009.33
  6. Step 6: Final answer
    x = 55,445.98

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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.