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Finding the Fourth Proportional to 70,869.75, 97,800.26 and 39,038.55

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Solution

The fourth proportional to 70,869.75, 97,800.26 and 39,038.55 is: 53,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,869.75 : 97,800.26 = 39,038.55 : x
  2. Step 2: Convert to fraction form
    70,869.75/97,800.26 = 39,038.55/x
  3. Step 3: Cross multiply
    70,869.75x = 97,800.26 × 39,038.55
  4. Step 4: Simplify right side
    70,869.75x = 3,817,980,144.83
  5. Step 5: Solve for x
    x = 3,817,980,144.83/70,869.75
  6. Step 6: Final answer
    x = 53,873.20

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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.