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Finding the Fourth Proportional to 56,748.32, 85,174.32 and 43,557.92

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Solution

The fourth proportional to 56,748.32, 85,174.32 and 43,557.92 is: 65,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,748.32 : 85,174.32 = 43,557.92 : x
  2. Step 2: Convert to fraction form
    56,748.32/85,174.32 = 43,557.92/x
  3. Step 3: Cross multiply
    56,748.32x = 85,174.32 × 43,557.92
  4. Step 4: Simplify right side
    56,748.32x = 3,710,016,216.61
  5. Step 5: Solve for x
    x = 3,710,016,216.61/56,748.32
  6. Step 6: Final answer
    x = 65,376.67

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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.