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Finding the Fourth Proportional to 70,739.78, 97,643.52 and 45,314.54

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Solution

The fourth proportional to 70,739.78, 97,643.52 and 45,314.54 is: 62,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,739.78 : 97,643.52 = 45,314.54 : x
  2. Step 2: Convert to fraction form
    70,739.78/97,643.52 = 45,314.54/x
  3. Step 3: Cross multiply
    70,739.78x = 97,643.52 × 45,314.54
  4. Step 4: Simplify right side
    70,739.78x = 4,424,671,192.78
  5. Step 5: Solve for x
    x = 4,424,671,192.78/70,739.78
  6. Step 6: Final answer
    x = 62,548.56

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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.