Home / 77,405.21-116,140.68-42,303.86

Finding the Fourth Proportional to 77,405.21, 116,140.68 and 42,303.86

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Solution

The fourth proportional to 77,405.21, 116,140.68 and 42,303.86 is: 63,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.21 : 116,140.68 = 42,303.86 : x
  2. Step 2: Convert to fraction form
    77,405.21/116,140.68 = 42,303.86/x
  3. Step 3: Cross multiply
    77,405.21x = 116,140.68 × 42,303.86
  4. Step 4: Simplify right side
    77,405.21x = 4,913,198,592.08
  5. Step 5: Solve for x
    x = 4,913,198,592.08/77,405.21
  6. Step 6: Final answer
    x = 63,473.75

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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.