Home / 74,632.10-102,988.85-40,640.45

Finding the Fourth Proportional to 74,632.10, 102,988.85 and 40,640.45

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Solution

The fourth proportional to 74,632.10, 102,988.85 and 40,640.45 is: 56,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,632.10 : 102,988.85 = 40,640.45 : x
  2. Step 2: Convert to fraction form
    74,632.10/102,988.85 = 40,640.45/x
  3. Step 3: Cross multiply
    74,632.10x = 102,988.85 × 40,640.45
  4. Step 4: Simplify right side
    74,632.10x = 4,185,512,490.84
  5. Step 5: Solve for x
    x = 4,185,512,490.84/74,632.10
  6. Step 6: Final answer
    x = 56,081.94

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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.