Home / 53,801.20-74,140.68-53,145.10

Finding the Fourth Proportional to 53,801.20, 74,140.68 and 53,145.10

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Solution

The fourth proportional to 53,801.20, 74,140.68 and 53,145.10 is: 73,236.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,801.20 : 74,140.68 = 53,145.10 : x
  2. Step 2: Convert to fraction form
    53,801.20/74,140.68 = 53,145.10/x
  3. Step 3: Cross multiply
    53,801.20x = 74,140.68 × 53,145.10
  4. Step 4: Simplify right side
    53,801.20x = 3,940,213,852.67
  5. Step 5: Solve for x
    x = 3,940,213,852.67/53,801.20
  6. Step 6: Final answer
    x = 73,236.54

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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.