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Finding the Fourth Proportional to 70,661.60, 97,508.41 and 40,447.16

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Solution

The fourth proportional to 70,661.60, 97,508.41 and 40,447.16 is: 55,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.60 : 97,508.41 = 40,447.16 : x
  2. Step 2: Convert to fraction form
    70,661.60/97,508.41 = 40,447.16/x
  3. Step 3: Cross multiply
    70,661.60x = 97,508.41 × 40,447.16
  4. Step 4: Simplify right side
    70,661.60x = 3,943,937,773.07
  5. Step 5: Solve for x
    x = 3,943,937,773.07/70,661.60
  6. Step 6: Final answer
    x = 55,814.45

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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.