Home / 70,731.05-106,022.45-28,641.02

Finding the Fourth Proportional to 70,731.05, 106,022.45 and 28,641.02

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Solution

The fourth proportional to 70,731.05, 106,022.45 and 28,641.02 is: 42,931.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,731.05 : 106,022.45 = 28,641.02 : x
  2. Step 2: Convert to fraction form
    70,731.05/106,022.45 = 28,641.02/x
  3. Step 3: Cross multiply
    70,731.05x = 106,022.45 × 28,641.02
  4. Step 4: Simplify right side
    70,731.05x = 3,036,590,652.39
  5. Step 5: Solve for x
    x = 3,036,590,652.39/70,731.05
  6. Step 6: Final answer
    x = 42,931.51

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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.