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Finding the Fourth Proportional to 58,704.32, 87,978.60 and 31,981.76

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Solution

The fourth proportional to 58,704.32, 87,978.60 and 31,981.76 is: 47,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,704.32 : 87,978.60 = 31,981.76 : x
  2. Step 2: Convert to fraction form
    58,704.32/87,978.60 = 31,981.76/x
  3. Step 3: Cross multiply
    58,704.32x = 87,978.60 × 31,981.76
  4. Step 4: Simplify right side
    58,704.32x = 2,813,710,030.44
  5. Step 5: Solve for x
    x = 2,813,710,030.44/58,704.32
  6. Step 6: Final answer
    x = 47,930.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.