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Finding the Fourth Proportional to 58,155.68, 87,215.16 and 18,704

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Solution

The fourth proportional to 58,155.68, 87,215.16 and 18,704 is: 28,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,155.68 : 87,215.16 = 18,704 : x
  2. Step 2: Convert to fraction form
    58,155.68/87,215.16 = 18,704/x
  3. Step 3: Cross multiply
    58,155.68x = 87,215.16 × 18,704
  4. Step 4: Simplify right side
    58,155.68x = 1,631,272,352.64
  5. Step 5: Solve for x
    x = 1,631,272,352.64/58,155.68
  6. Step 6: Final answer
    x = 28,050.10

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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.