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Finding the Fourth Proportional to 58,148.76, 87,167.77 and 18,678.21

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Solution

The fourth proportional to 58,148.76, 87,167.77 and 18,678.21 is: 27,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,148.76 : 87,167.77 = 18,678.21 : x
  2. Step 2: Convert to fraction form
    58,148.76/87,167.77 = 18,678.21/x
  3. Step 3: Cross multiply
    58,148.76x = 87,167.77 × 18,678.21
  4. Step 4: Simplify right side
    58,148.76x = 1,628,137,913.29
  5. Step 5: Solve for x
    x = 1,628,137,913.29/58,148.76
  6. Step 6: Final answer
    x = 27,999.53

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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.