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Finding the Fourth Proportional to 51,703.79, 77,555.97 and 18,425.12

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Solution

The fourth proportional to 51,703.79, 77,555.97 and 18,425.12 is: 27,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,703.79 : 77,555.97 = 18,425.12 : x
  2. Step 2: Convert to fraction form
    51,703.79/77,555.97 = 18,425.12/x
  3. Step 3: Cross multiply
    51,703.79x = 77,555.97 × 18,425.12
  4. Step 4: Simplify right side
    51,703.79x = 1,428,977,666.19
  5. Step 5: Solve for x
    x = 1,428,977,666.19/51,703.79
  6. Step 6: Final answer
    x = 27,637.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.