Home / 72,199.63-99,638.66-40,368.55

Finding the Fourth Proportional to 72,199.63, 99,638.66 and 40,368.55

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Solution

The fourth proportional to 72,199.63, 99,638.66 and 40,368.55 is: 55,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,199.63 : 99,638.66 = 40,368.55 : x
  2. Step 2: Convert to fraction form
    72,199.63/99,638.66 = 40,368.55/x
  3. Step 3: Cross multiply
    72,199.63x = 99,638.66 × 40,368.55
  4. Step 4: Simplify right side
    72,199.63x = 4,022,268,228.14
  5. Step 5: Solve for x
    x = 4,022,268,228.14/72,199.63
  6. Step 6: Final answer
    x = 55,710.37

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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.