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Finding the Fourth Proportional to 58,630.40, 87,913.20 and 19,167.20

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Solution

The fourth proportional to 58,630.40, 87,913.20 and 19,167.20 is: 28,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,630.40 : 87,913.20 = 19,167.20 : x
  2. Step 2: Convert to fraction form
    58,630.40/87,913.20 = 19,167.20/x
  3. Step 3: Cross multiply
    58,630.40x = 87,913.20 × 19,167.20
  4. Step 4: Simplify right side
    58,630.40x = 1,685,049,887.04
  5. Step 5: Solve for x
    x = 1,685,049,887.04/58,630.40
  6. Step 6: Final answer
    x = 28,740.21

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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.