Home / 49,321.32-74,070.60-45,365.40

Finding the Fourth Proportional to 49,321.32, 74,070.60 and 45,365.40

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Solution

The fourth proportional to 49,321.32, 74,070.60 and 45,365.40 is: 68,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,321.32 : 74,070.60 = 45,365.40 : x
  2. Step 2: Convert to fraction form
    49,321.32/74,070.60 = 45,365.40/x
  3. Step 3: Cross multiply
    49,321.32x = 74,070.60 × 45,365.40
  4. Step 4: Simplify right side
    49,321.32x = 3,360,242,397.24
  5. Step 5: Solve for x
    x = 3,360,242,397.24/49,321.32
  6. Step 6: Final answer
    x = 68,129.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.