Home / 74,272.25-102,495.75-40,280.72

Finding the Fourth Proportional to 74,272.25, 102,495.75 and 40,280.72

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Solution

The fourth proportional to 74,272.25, 102,495.75 and 40,280.72 is: 55,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,272.25 : 102,495.75 = 40,280.72 : x
  2. Step 2: Convert to fraction form
    74,272.25/102,495.75 = 40,280.72/x
  3. Step 3: Cross multiply
    74,272.25x = 102,495.75 × 40,280.72
  4. Step 4: Simplify right side
    74,272.25x = 4,128,602,405.54
  5. Step 5: Solve for x
    x = 4,128,602,405.54/74,272.25
  6. Step 6: Final answer
    x = 55,587.42

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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.