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Finding the Fourth Proportional to 70,641.60, 97,499.73 and 43,405.28

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Solution

The fourth proportional to 70,641.60, 97,499.73 and 43,405.28 is: 59,908.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,641.60 : 97,499.73 = 43,405.28 : x
  2. Step 2: Convert to fraction form
    70,641.60/97,499.73 = 43,405.28/x
  3. Step 3: Cross multiply
    70,641.60x = 97,499.73 × 43,405.28
  4. Step 4: Simplify right side
    70,641.60x = 4,232,002,376.05
  5. Step 5: Solve for x
    x = 4,232,002,376.05/70,641.60
  6. Step 6: Final answer
    x = 59,908.08

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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.