Home / 74,140.43-102,313.59-40,148.91

Finding the Fourth Proportional to 74,140.43, 102,313.59 and 40,148.91

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Solution

The fourth proportional to 74,140.43, 102,313.59 and 40,148.91 is: 55,405.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,140.43 : 102,313.59 = 40,148.91 : x
  2. Step 2: Convert to fraction form
    74,140.43/102,313.59 = 40,148.91/x
  3. Step 3: Cross multiply
    74,140.43x = 102,313.59 × 40,148.91
  4. Step 4: Simplify right side
    74,140.43x = 4,107,779,116.69
  5. Step 5: Solve for x
    x = 4,107,779,116.69/74,140.43
  6. Step 6: Final answer
    x = 55,405.39

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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.