Home / 74,143.81-102,318.96-40,152.32

Finding the Fourth Proportional to 74,143.81, 102,318.96 and 40,152.32

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Solution

The fourth proportional to 74,143.81, 102,318.96 and 40,152.32 is: 55,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143.81 : 102,318.96 = 40,152.32 : x
  2. Step 2: Convert to fraction form
    74,143.81/102,318.96 = 40,152.32/x
  3. Step 3: Cross multiply
    74,143.81x = 102,318.96 × 40,152.32
  4. Step 4: Simplify right side
    74,143.81x = 4,108,343,879.78
  5. Step 5: Solve for x
    x = 4,108,343,879.78/74,143.81
  6. Step 6: Final answer
    x = 55,410.48

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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.