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Finding the Fourth Proportional to 70,382.79, 97,129.82 and 40,167.51

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Solution

The fourth proportional to 70,382.79, 97,129.82 and 40,167.51 is: 55,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,382.79 : 97,129.82 = 40,167.51 : x
  2. Step 2: Convert to fraction form
    70,382.79/97,129.82 = 40,167.51/x
  3. Step 3: Cross multiply
    70,382.79x = 97,129.82 × 40,167.51
  4. Step 4: Simplify right side
    70,382.79x = 3,901,462,815.31
  5. Step 5: Solve for x
    x = 3,901,462,815.31/70,382.79
  6. Step 6: Final answer
    x = 55,432.06

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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.