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Finding the Fourth Proportional to 55,548.60, 76,656.75 and 51,030

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Solution

The fourth proportional to 55,548.60, 76,656.75 and 51,030 is: 70,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,548.60 : 76,656.75 = 51,030 : x
  2. Step 2: Convert to fraction form
    55,548.60/76,656.75 = 51,030/x
  3. Step 3: Cross multiply
    55,548.60x = 76,656.75 × 51,030
  4. Step 4: Simplify right side
    55,548.60x = 3,911,793,952.50
  5. Step 5: Solve for x
    x = 3,911,793,952.50/55,548.60
  6. Step 6: Final answer
    x = 70,421.11

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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.