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Finding the Fourth Proportional to 70,951, 97,869 and 42,251.56

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Solution

The fourth proportional to 70,951, 97,869 and 42,251.56 is: 58,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951 : 97,869 = 42,251.56 : x
  2. Step 2: Convert to fraction form
    70,951/97,869 = 42,251.56/x
  3. Step 3: Cross multiply
    70,951x = 97,869 × 42,251.56
  4. Step 4: Simplify right side
    70,951x = 4,135,117,925.64
  5. Step 5: Solve for x
    x = 4,135,117,925.64/70,951
  6. Step 6: Final answer
    x = 58,281.32

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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.