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Finding the Fourth Proportional to 58,618.28, 87,939.73 and 19,172.32

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Solution

The fourth proportional to 58,618.28, 87,939.73 and 19,172.32 is: 28,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,618.28 : 87,939.73 = 19,172.32 : x
  2. Step 2: Convert to fraction form
    58,618.28/87,939.73 = 19,172.32/x
  3. Step 3: Cross multiply
    58,618.28x = 87,939.73 × 19,172.32
  4. Step 4: Simplify right side
    58,618.28x = 1,686,008,587.88
  5. Step 5: Solve for x
    x = 1,686,008,587.88/58,618.28
  6. Step 6: Final answer
    x = 28,762.50

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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.