Home / 54,708.75-81,981.09-42,210.05

Finding the Fourth Proportional to 54,708.75, 81,981.09 and 42,210.05

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Solution

The fourth proportional to 54,708.75, 81,981.09 and 42,210.05 is: 63,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,708.75 : 81,981.09 = 42,210.05 : x
  2. Step 2: Convert to fraction form
    54,708.75/81,981.09 = 42,210.05/x
  3. Step 3: Cross multiply
    54,708.75x = 81,981.09 × 42,210.05
  4. Step 4: Simplify right side
    54,708.75x = 3,460,425,498.05
  5. Step 5: Solve for x
    x = 3,460,425,498.05/54,708.75
  6. Step 6: Final answer
    x = 63,251.77

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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.