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Finding the Fourth Proportional to 70,539.78, 97,344.84 and 38,710.68

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Solution

The fourth proportional to 70,539.78, 97,344.84 and 38,710.68 is: 53,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,539.78 : 97,344.84 = 38,710.68 : x
  2. Step 2: Convert to fraction form
    70,539.78/97,344.84 = 38,710.68/x
  3. Step 3: Cross multiply
    70,539.78x = 97,344.84 × 38,710.68
  4. Step 4: Simplify right side
    70,539.78x = 3,768,284,950.89
  5. Step 5: Solve for x
    x = 3,768,284,950.89/70,539.78
  6. Step 6: Final answer
    x = 53,420.71

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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.