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Finding the Fourth Proportional to 70,953.90, 97,917.14 and 38,688.25

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Solution

The fourth proportional to 70,953.90, 97,917.14 and 38,688.25 is: 53,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.90 : 97,917.14 = 38,688.25 : x
  2. Step 2: Convert to fraction form
    70,953.90/97,917.14 = 38,688.25/x
  3. Step 3: Cross multiply
    70,953.90x = 97,917.14 × 38,688.25
  4. Step 4: Simplify right side
    70,953.90x = 3,788,242,865.64
  5. Step 5: Solve for x
    x = 3,788,242,865.64/70,953.90
  6. Step 6: Final answer
    x = 53,390.20

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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.