Home / 108,639.88-162,981.15-52,518.76

Finding the Fourth Proportional to 108,639.88, 162,981.15 and 52,518.76

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Solution

The fourth proportional to 108,639.88, 162,981.15 and 52,518.76 is: 78,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,639.88 : 162,981.15 = 52,518.76 : x
  2. Step 2: Convert to fraction form
    108,639.88/162,981.15 = 52,518.76/x
  3. Step 3: Cross multiply
    108,639.88x = 162,981.15 × 52,518.76
  4. Step 4: Simplify right side
    108,639.88x = 8,559,567,901.37
  5. Step 5: Solve for x
    x = 8,559,567,901.37/108,639.88
  6. Step 6: Final answer
    x = 78,788.45

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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.