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Finding the Fourth Proportional to 70,903.80, 97,845.30 and 38,637.72

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Solution

The fourth proportional to 70,903.80, 97,845.30 and 38,637.72 is: 53,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.80 : 97,845.30 = 38,637.72 : x
  2. Step 2: Convert to fraction form
    70,903.80/97,845.30 = 38,637.72/x
  3. Step 3: Cross multiply
    70,903.80x = 97,845.30 × 38,637.72
  4. Step 4: Simplify right side
    70,903.80x = 3,780,519,304.72
  5. Step 5: Solve for x
    x = 3,780,519,304.72/70,903.80
  6. Step 6: Final answer
    x = 53,318.99

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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.