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Finding the Fourth Proportional to 70,869.72, 97,800.48 and 39,038.54

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Solution

The fourth proportional to 70,869.72, 97,800.48 and 39,038.54 is: 53,873.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,869.72 : 97,800.48 = 39,038.54 : x
  2. Step 2: Convert to fraction form
    70,869.72/97,800.48 = 39,038.54/x
  3. Step 3: Cross multiply
    70,869.72x = 97,800.48 × 39,038.54
  4. Step 4: Simplify right side
    70,869.72x = 3,817,987,950.50
  5. Step 5: Solve for x
    x = 3,817,987,950.50/70,869.72
  6. Step 6: Final answer
    x = 53,873.33

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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.