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Finding the Fourth Proportional to 70,366.60, 97,081.80 and 40,130.08

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Solution

The fourth proportional to 70,366.60, 97,081.80 and 40,130.08 is: 55,365.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,366.60 : 97,081.80 = 40,130.08 : x
  2. Step 2: Convert to fraction form
    70,366.60/97,081.80 = 40,130.08/x
  3. Step 3: Cross multiply
    70,366.60x = 97,081.80 × 40,130.08
  4. Step 4: Simplify right side
    70,366.60x = 3,895,900,400.54
  5. Step 5: Solve for x
    x = 3,895,900,400.54/70,366.60
  6. Step 6: Final answer
    x = 55,365.76

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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.