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Finding the Fourth Proportional to 76,606.70, 105,630.08 and 53,938.44

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Solution

The fourth proportional to 76,606.70, 105,630.08 and 53,938.44 is: 74,373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,606.70 : 105,630.08 = 53,938.44 : x
  2. Step 2: Convert to fraction form
    76,606.70/105,630.08 = 53,938.44/x
  3. Step 3: Cross multiply
    76,606.70x = 105,630.08 × 53,938.44
  4. Step 4: Simplify right side
    76,606.70x = 5,697,521,462.58
  5. Step 5: Solve for x
    x = 5,697,521,462.58/76,606.70
  6. Step 6: Final answer
    x = 74,373.68

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1.5x scale

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.