Home / 77,711.40-116,567.10-71,490.60

Finding the Fourth Proportional to 77,711.40, 116,567.10 and 71,490.60

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Solution

The fourth proportional to 77,711.40, 116,567.10 and 71,490.60 is: 107,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,711.40 : 116,567.10 = 71,490.60 : x
  2. Step 2: Convert to fraction form
    77,711.40/116,567.10 = 71,490.60/x
  3. Step 3: Cross multiply
    77,711.40x = 116,567.10 × 71,490.60
  4. Step 4: Simplify right side
    77,711.40x = 8,333,451,919.26
  5. Step 5: Solve for x
    x = 8,333,451,919.26/77,711.40
  6. Step 6: Final answer
    x = 107,235.90

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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.