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Finding the Fourth Proportional to 70,628.54, 97,462.58 and 38,798.78

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Solution

The fourth proportional to 70,628.54, 97,462.58 and 38,798.78 is: 53,539.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,628.54 : 97,462.58 = 38,798.78 : x
  2. Step 2: Convert to fraction form
    70,628.54/97,462.58 = 38,798.78/x
  3. Step 3: Cross multiply
    70,628.54x = 97,462.58 × 38,798.78
  4. Step 4: Simplify right side
    70,628.54x = 3,781,429,199.65
  5. Step 5: Solve for x
    x = 3,781,429,199.65/70,628.54
  6. Step 6: Final answer
    x = 53,539.68

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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.