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Finding the Fourth Proportional to 70,304.72, 105,410.30 and 38,729.63

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Solution

The fourth proportional to 70,304.72, 105,410.30 and 38,729.63 is: 58,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,304.72 : 105,410.30 = 38,729.63 : x
  2. Step 2: Convert to fraction form
    70,304.72/105,410.30 = 38,729.63/x
  3. Step 3: Cross multiply
    70,304.72x = 105,410.30 × 38,729.63
  4. Step 4: Simplify right side
    70,304.72x = 4,082,501,987.07
  5. Step 5: Solve for x
    x = 4,082,501,987.07/70,304.72
  6. Step 6: Final answer
    x = 58,068.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.