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Finding the Fourth Proportional to 93,850, 129,511.40 and 51,408.40

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Solution

The fourth proportional to 93,850, 129,511.40 and 51,408.40 is: 70,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,850 : 129,511.40 = 51,408.40 : x
  2. Step 2: Convert to fraction form
    93,850/129,511.40 = 51,408.40/x
  3. Step 3: Cross multiply
    93,850x = 129,511.40 × 51,408.40
  4. Step 4: Simplify right side
    93,850x = 6,657,973,855.76
  5. Step 5: Solve for x
    x = 6,657,973,855.76/93,850
  6. Step 6: Final answer
    x = 70,942.72

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1.5x scale

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.