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Finding the Fourth Proportional to 70,903.20, 97,845.16 and 38,638.11

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Solution

The fourth proportional to 70,903.20, 97,845.16 and 38,638.11 is: 53,319.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.20 : 97,845.16 = 38,638.11 : x
  2. Step 2: Convert to fraction form
    70,903.20/97,845.16 = 38,638.11/x
  3. Step 3: Cross multiply
    70,903.20x = 97,845.16 × 38,638.11
  4. Step 4: Simplify right side
    70,903.20x = 3,780,552,055.05
  5. Step 5: Solve for x
    x = 3,780,552,055.05/70,903.20
  6. Step 6: Final answer
    x = 53,319.91

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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.