Home / 74,349.21-102,603.73-40,357.61

Finding the Fourth Proportional to 74,349.21, 102,603.73 and 40,357.61

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Solution

The fourth proportional to 74,349.21, 102,603.73 and 40,357.61 is: 55,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,349.21 : 102,603.73 = 40,357.61 : x
  2. Step 2: Convert to fraction form
    74,349.21/102,603.73 = 40,357.61/x
  3. Step 3: Cross multiply
    74,349.21x = 102,603.73 × 40,357.61
  4. Step 4: Simplify right side
    74,349.21x = 4,140,841,319.89
  5. Step 5: Solve for x
    x = 4,140,841,319.89/74,349.21
  6. Step 6: Final answer
    x = 55,694.49

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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.