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Finding the Fourth Proportional to 105,412.63, 145,472.88 and 60,089.79

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Solution

The fourth proportional to 105,412.63, 145,472.88 and 60,089.79 is: 82,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,412.63 : 145,472.88 = 60,089.79 : x
  2. Step 2: Convert to fraction form
    105,412.63/145,472.88 = 60,089.79/x
  3. Step 3: Cross multiply
    105,412.63x = 145,472.88 × 60,089.79
  4. Step 4: Simplify right side
    105,412.63x = 8,741,433,782.08
  5. Step 5: Solve for x
    x = 8,741,433,782.08/105,412.63
  6. Step 6: Final answer
    x = 82,925.87

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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.