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Finding the Fourth Proportional to 58,129.65, 87,194.16 and 18,686.88

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Solution

The fourth proportional to 58,129.65, 87,194.16 and 18,686.88 is: 28,030.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,129.65 : 87,194.16 = 18,686.88 : x
  2. Step 2: Convert to fraction form
    58,129.65/87,194.16 = 18,686.88/x
  3. Step 3: Cross multiply
    58,129.65x = 87,194.16 × 18,686.88
  4. Step 4: Simplify right side
    58,129.65x = 1,629,386,804.62
  5. Step 5: Solve for x
    x = 1,629,386,804.62/58,129.65
  6. Step 6: Final answer
    x = 28,030.22

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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.