Home / 77,269.64-115,904.46-42,190.16

Finding the Fourth Proportional to 77,269.64, 115,904.46 and 42,190.16

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Solution

The fourth proportional to 77,269.64, 115,904.46 and 42,190.16 is: 63,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,269.64 : 115,904.46 = 42,190.16 : x
  2. Step 2: Convert to fraction form
    77,269.64/115,904.46 = 42,190.16/x
  3. Step 3: Cross multiply
    77,269.64x = 115,904.46 × 42,190.16
  4. Step 4: Simplify right side
    77,269.64x = 4,890,027,712.11
  5. Step 5: Solve for x
    x = 4,890,027,712.11/77,269.64
  6. Step 6: Final answer
    x = 63,285.24

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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.