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Finding the Fourth Proportional to 58,005.78, 86,866.20 and 28,327.92

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Solution

The fourth proportional to 58,005.78, 86,866.20 and 28,327.92 is: 42,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,005.78 : 86,866.20 = 28,327.92 : x
  2. Step 2: Convert to fraction form
    58,005.78/86,866.20 = 28,327.92/x
  3. Step 3: Cross multiply
    58,005.78x = 86,866.20 × 28,327.92
  4. Step 4: Simplify right side
    58,005.78x = 2,460,738,764.30
  5. Step 5: Solve for x
    x = 2,460,738,764.30/58,005.78
  6. Step 6: Final answer
    x = 42,422.30

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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.