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Finding the Fourth Proportional to 70,876.96, 97,806.57 and 39,045.16

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Solution

The fourth proportional to 70,876.96, 97,806.57 and 39,045.16 is: 53,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876.96 : 97,806.57 = 39,045.16 : x
  2. Step 2: Convert to fraction form
    70,876.96/97,806.57 = 39,045.16/x
  3. Step 3: Cross multiply
    70,876.96x = 97,806.57 × 39,045.16
  4. Step 4: Simplify right side
    70,876.96x = 3,818,873,174.70
  5. Step 5: Solve for x
    x = 3,818,873,174.70/70,876.96
  6. Step 6: Final answer
    x = 53,880.32

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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.