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Finding the Fourth Proportional to 58,045.16, 87,071.88 and 20,078.69

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Solution

The fourth proportional to 58,045.16, 87,071.88 and 20,078.69 is: 30,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,045.16 : 87,071.88 = 20,078.69 : x
  2. Step 2: Convert to fraction form
    58,045.16/87,071.88 = 20,078.69/x
  3. Step 3: Cross multiply
    58,045.16x = 87,071.88 × 20,078.69
  4. Step 4: Simplify right side
    58,045.16x = 1,748,289,286.24
  5. Step 5: Solve for x
    x = 1,748,289,286.24/58,045.16
  6. Step 6: Final answer
    x = 30,119.47

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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.