Home / 77,856.10-107,445.34-47,631.96

Finding the Fourth Proportional to 77,856.10, 107,445.34 and 47,631.96

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Solution

The fourth proportional to 77,856.10, 107,445.34 and 47,631.96 is: 65,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,856.10 : 107,445.34 = 47,631.96 : x
  2. Step 2: Convert to fraction form
    77,856.10/107,445.34 = 47,631.96/x
  3. Step 3: Cross multiply
    77,856.10x = 107,445.34 × 47,631.96
  4. Step 4: Simplify right side
    77,856.10x = 5,117,832,137.07
  5. Step 5: Solve for x
    x = 5,117,832,137.07/77,856.10
  6. Step 6: Final answer
    x = 65,734.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.