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Finding the Fourth Proportional to 74,358, 102,701.52 and 50,443.16

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Solution

The fourth proportional to 74,358, 102,701.52 and 50,443.16 is: 69,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,358 : 102,701.52 = 50,443.16 : x
  2. Step 2: Convert to fraction form
    74,358/102,701.52 = 50,443.16/x
  3. Step 3: Cross multiply
    74,358x = 102,701.52 × 50,443.16
  4. Step 4: Simplify right side
    74,358x = 5,180,588,692.10
  5. Step 5: Solve for x
    x = 5,180,588,692.10/74,358
  6. Step 6: Final answer
    x = 69,670.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.