Home / 53,800.20-74,139.30-53,144.10

Finding the Fourth Proportional to 53,800.20, 74,139.30 and 53,144.10

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Solution

The fourth proportional to 53,800.20, 74,139.30 and 53,144.10 is: 73,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,800.20 : 74,139.30 = 53,144.10 : x
  2. Step 2: Convert to fraction form
    53,800.20/74,139.30 = 53,144.10/x
  3. Step 3: Cross multiply
    53,800.20x = 74,139.30 × 53,144.10
  4. Step 4: Simplify right side
    53,800.20x = 3,940,066,373.13
  5. Step 5: Solve for x
    x = 3,940,066,373.13/53,800.20
  6. Step 6: Final answer
    x = 73,235.16

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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.