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Finding the Fourth Proportional to 58,342.60, 87,513.90 and 18,903.70

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Solution

The fourth proportional to 58,342.60, 87,513.90 and 18,903.70 is: 28,355.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,342.60 : 87,513.90 = 18,903.70 : x
  2. Step 2: Convert to fraction form
    58,342.60/87,513.90 = 18,903.70/x
  3. Step 3: Cross multiply
    58,342.60x = 87,513.90 × 18,903.70
  4. Step 4: Simplify right side
    58,342.60x = 1,654,336,511.43
  5. Step 5: Solve for x
    x = 1,654,336,511.43/58,342.60
  6. Step 6: Final answer
    x = 28,355.55

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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.