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Finding the Fourth Proportional to 74,622.37, 102,980.72 and 40,632.72

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Solution

The fourth proportional to 74,622.37, 102,980.72 and 40,632.72 is: 56,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,622.37 : 102,980.72 = 40,632.72 : x
  2. Step 2: Convert to fraction form
    74,622.37/102,980.72 = 40,632.72/x
  3. Step 3: Cross multiply
    74,622.37x = 102,980.72 × 40,632.72
  4. Step 4: Simplify right side
    74,622.37x = 4,184,387,301.62
  5. Step 5: Solve for x
    x = 4,184,387,301.62/74,622.37
  6. Step 6: Final answer
    x = 56,074.16

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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.