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Finding the Fourth Proportional to 76,862.32, 106,074.88 and 43,330.48

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Solution

The fourth proportional to 76,862.32, 106,074.88 and 43,330.48 is: 59,798.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,862.32 : 106,074.88 = 43,330.48 : x
  2. Step 2: Convert to fraction form
    76,862.32/106,074.88 = 43,330.48/x
  3. Step 3: Cross multiply
    76,862.32x = 106,074.88 × 43,330.48
  4. Step 4: Simplify right side
    76,862.32x = 4,596,275,466.34
  5. Step 5: Solve for x
    x = 4,596,275,466.34/76,862.32
  6. Step 6: Final answer
    x = 59,798.81

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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.