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Finding the Fourth Proportional to 58,021.63, 87,071.34 and 21,085.63

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Solution

The fourth proportional to 58,021.63, 87,071.34 and 21,085.63 is: 31,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,021.63 : 87,071.34 = 21,085.63 : x
  2. Step 2: Convert to fraction form
    58,021.63/87,071.34 = 21,085.63/x
  3. Step 3: Cross multiply
    58,021.63x = 87,071.34 × 21,085.63
  4. Step 4: Simplify right side
    58,021.63x = 1,835,954,058.84
  5. Step 5: Solve for x
    x = 1,835,954,058.84/58,021.63
  6. Step 6: Final answer
    x = 31,642.58

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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.