Home / 54,071.21-81,068.61-20,763.20

Finding the Fourth Proportional to 54,071.21, 81,068.61 and 20,763.20

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Solution

The fourth proportional to 54,071.21, 81,068.61 and 20,763.20 is: 31,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,071.21 : 81,068.61 = 20,763.20 : x
  2. Step 2: Convert to fraction form
    54,071.21/81,068.61 = 20,763.20/x
  3. Step 3: Cross multiply
    54,071.21x = 81,068.61 × 20,763.20
  4. Step 4: Simplify right side
    54,071.21x = 1,683,243,763.15
  5. Step 5: Solve for x
    x = 1,683,243,763.15/54,071.21
  6. Step 6: Final answer
    x = 31,130.13

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1.5x scale

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.