Home / 85,979,914.64-118,651,103.88-48,809,870

Finding the Fourth Proportional to 85,979,914.64, 118,651,103.88 and 48,809,870

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Solution

The fourth proportional to 85,979,914.64, 118,651,103.88 and 48,809,870 is: 67,356,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,979,914.64 : 118,651,103.88 = 48,809,870 : x
  2. Step 2: Convert to fraction form
    85,979,914.64/118,651,103.88 = 48,809,870/x
  3. Step 3: Cross multiply
    85,979,914.64x = 118,651,103.88 × 48,809,870
  4. Step 4: Simplify right side
    85,979,914.64x = 5,791,344,955,739,295
  5. Step 5: Solve for x
    x = 5,791,344,955,739,295/85,979,914.64
  6. Step 6: Final answer
    x = 67,356,951.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.