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Finding the Fourth Proportional to 58,513.51, 87,717.88 and 21,064.78

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Solution

The fourth proportional to 58,513.51, 87,717.88 and 21,064.78 is: 31,578.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,513.51 : 87,717.88 = 21,064.78 : x
  2. Step 2: Convert to fraction form
    58,513.51/87,717.88 = 21,064.78/x
  3. Step 3: Cross multiply
    58,513.51x = 87,717.88 × 21,064.78
  4. Step 4: Simplify right side
    58,513.51x = 1,847,757,844.27
  5. Step 5: Solve for x
    x = 1,847,757,844.27/58,513.51
  6. Step 6: Final answer
    x = 31,578.31

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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.