Home / 78,286,019.60-117,429,029.40-71,231,632.40

Finding the Fourth Proportional to 78,286,019.60, 117,429,029.40 and 71,231,632.40

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Solution

The fourth proportional to 78,286,019.60, 117,429,029.40 and 71,231,632.40 is: 106,847,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286,019.60 : 117,429,029.40 = 71,231,632.40 : x
  2. Step 2: Convert to fraction form
    78,286,019.60/117,429,029.40 = 71,231,632.40/x
  3. Step 3: Cross multiply
    78,286,019.60x = 117,429,029.40 × 71,231,632.40
  4. Step 4: Simplify right side
    78,286,019.60x = 8,364,661,455,309,594
  5. Step 5: Solve for x
    x = 8,364,661,455,309,594/78,286,019.60
  6. Step 6: Final answer
    x = 106,847,448.60

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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.