Home / 80,730.51-121,096.38-28,140.05

Finding the Fourth Proportional to 80,730.51, 121,096.38 and 28,140.05

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Solution

The fourth proportional to 80,730.51, 121,096.38 and 28,140.05 is: 42,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,730.51 : 121,096.38 = 28,140.05 : x
  2. Step 2: Convert to fraction form
    80,730.51/121,096.38 = 28,140.05/x
  3. Step 3: Cross multiply
    80,730.51x = 121,096.38 × 28,140.05
  4. Step 4: Simplify right side
    80,730.51x = 3,407,657,441.84
  5. Step 5: Solve for x
    x = 3,407,657,441.84/80,730.51
  6. Step 6: Final answer
    x = 42,210.28

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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.