Home / 77,970.28-116,954.40-18,805.51

Finding the Fourth Proportional to 77,970.28, 116,954.40 and 18,805.51

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Solution

The fourth proportional to 77,970.28, 116,954.40 and 18,805.51 is: 28,208.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,970.28 : 116,954.40 = 18,805.51 : x
  2. Step 2: Convert to fraction form
    77,970.28/116,954.40 = 18,805.51/x
  3. Step 3: Cross multiply
    77,970.28x = 116,954.40 × 18,805.51
  4. Step 4: Simplify right side
    77,970.28x = 2,199,387,138.74
  5. Step 5: Solve for x
    x = 2,199,387,138.74/77,970.28
  6. Step 6: Final answer
    x = 28,208.02

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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.