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Finding the Fourth Proportional to 75,368.34, 113,068.51 and 28,620.18

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Solution

The fourth proportional to 75,368.34, 113,068.51 and 28,620.18 is: 42,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,368.34 : 113,068.51 = 28,620.18 : x
  2. Step 2: Convert to fraction form
    75,368.34/113,068.51 = 28,620.18/x
  3. Step 3: Cross multiply
    75,368.34x = 113,068.51 × 28,620.18
  4. Step 4: Simplify right side
    75,368.34x = 3,236,041,108.53
  5. Step 5: Solve for x
    x = 3,236,041,108.53/75,368.34
  6. Step 6: Final answer
    x = 42,936.35

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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.