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Finding the Fourth Proportional to 70,943.91, 97,903.35 and 39,113.95

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Solution

The fourth proportional to 70,943.91, 97,903.35 and 39,113.95 is: 53,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,943.91 : 97,903.35 = 39,113.95 : x
  2. Step 2: Convert to fraction form
    70,943.91/97,903.35 = 39,113.95/x
  3. Step 3: Cross multiply
    70,943.91x = 97,903.35 × 39,113.95
  4. Step 4: Simplify right side
    70,943.91x = 3,829,386,736.73
  5. Step 5: Solve for x
    x = 3,829,386,736.73/70,943.91
  6. Step 6: Final answer
    x = 53,977.67

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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.