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Finding the Fourth Proportional to 60,074.28, 89,994.78 and 28,931.40

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Solution

The fourth proportional to 60,074.28, 89,994.78 and 28,931.40 is: 43,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,074.28 : 89,994.78 = 28,931.40 : x
  2. Step 2: Convert to fraction form
    60,074.28/89,994.78 = 28,931.40/x
  3. Step 3: Cross multiply
    60,074.28x = 89,994.78 × 28,931.40
  4. Step 4: Simplify right side
    60,074.28x = 2,603,674,978.09
  5. Step 5: Solve for x
    x = 2,603,674,978.09/60,074.28
  6. Step 6: Final answer
    x = 43,340.93

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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.