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Finding the Fourth Proportional to 53,243.54, 79,728.72 and 51,666.87

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Solution

The fourth proportional to 53,243.54, 79,728.72 and 51,666.87 is: 77,367.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,243.54 : 79,728.72 = 51,666.87 : x
  2. Step 2: Convert to fraction form
    53,243.54/79,728.72 = 51,666.87/x
  3. Step 3: Cross multiply
    53,243.54x = 79,728.72 × 51,666.87
  4. Step 4: Simplify right side
    53,243.54x = 4,119,333,411.51
  5. Step 5: Solve for x
    x = 4,119,333,411.51/53,243.54
  6. Step 6: Final answer
    x = 77,367.76

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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.