Home / 77,286,856.40-115,944,281.40-38,851,643.60

Finding the Fourth Proportional to 77,286,856.40, 115,944,281.40 and 38,851,643.60

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Solution

The fourth proportional to 77,286,856.40, 115,944,281.40 and 38,851,643.60 is: 58,284,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,286,856.40 : 115,944,281.40 = 38,851,643.60 : x
  2. Step 2: Convert to fraction form
    77,286,856.40/115,944,281.40 = 38,851,643.60/x
  3. Step 3: Cross multiply
    77,286,856.40x = 115,944,281.40 × 38,851,643.60
  4. Step 4: Simplify right side
    77,286,856.40x = 4,504,625,898,410,909
  5. Step 5: Solve for x
    x = 4,504,625,898,410,909/77,286,856.40
  6. Step 6: Final answer
    x = 58,284,501.51

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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.