Home / 77,305.40-115,985.74-47,688.76

Finding the Fourth Proportional to 77,305.40, 115,985.74 and 47,688.76

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Solution

The fourth proportional to 77,305.40, 115,985.74 and 47,688.76 is: 71,550.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,305.40 : 115,985.74 = 47,688.76 : x
  2. Step 2: Convert to fraction form
    77,305.40/115,985.74 = 47,688.76/x
  3. Step 3: Cross multiply
    77,305.40x = 115,985.74 × 47,688.76
  4. Step 4: Simplify right side
    77,305.40x = 5,531,216,118.28
  5. Step 5: Solve for x
    x = 5,531,216,118.28/77,305.40
  6. Step 6: Final answer
    x = 71,550.19

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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.