Home / 80,706.47-121,056.97-21,539.01

Finding the Fourth Proportional to 80,706.47, 121,056.97 and 21,539.01

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Solution

The fourth proportional to 80,706.47, 121,056.97 and 21,539.01 is: 32,307.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,706.47 : 121,056.97 = 21,539.01 : x
  2. Step 2: Convert to fraction form
    80,706.47/121,056.97 = 21,539.01/x
  3. Step 3: Cross multiply
    80,706.47x = 121,056.97 × 21,539.01
  4. Step 4: Simplify right side
    80,706.47x = 2,607,447,287.40
  5. Step 5: Solve for x
    x = 2,607,447,287.40/80,706.47
  6. Step 6: Final answer
    x = 32,307.79

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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.