Home / 53,981.78-80,972.67-28,987.45

Finding the Fourth Proportional to 53,981.78, 80,972.67 and 28,987.45

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Solution

The fourth proportional to 53,981.78, 80,972.67 and 28,987.45 is: 43,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,981.78 : 80,972.67 = 28,987.45 : x
  2. Step 2: Convert to fraction form
    53,981.78/80,972.67 = 28,987.45/x
  3. Step 3: Cross multiply
    53,981.78x = 80,972.67 × 28,987.45
  4. Step 4: Simplify right side
    53,981.78x = 2,347,190,955.74
  5. Step 5: Solve for x
    x = 2,347,190,955.74/53,981.78
  6. Step 6: Final answer
    x = 43,481.17

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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.