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Finding the Fourth Proportional to 68,402.08, 102,603.12 and 31,466.40

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Solution

The fourth proportional to 68,402.08, 102,603.12 and 31,466.40 is: 47,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,402.08 : 102,603.12 = 31,466.40 : x
  2. Step 2: Convert to fraction form
    68,402.08/102,603.12 = 31,466.40/x
  3. Step 3: Cross multiply
    68,402.08x = 102,603.12 × 31,466.40
  4. Step 4: Simplify right side
    68,402.08x = 3,228,550,815.17
  5. Step 5: Solve for x
    x = 3,228,550,815.17/68,402.08
  6. Step 6: Final answer
    x = 47,199.60

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1.5x scale

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.