Home / 78,147,209.50-117,196,822.74-54,041,045.74

Finding the Fourth Proportional to 78,147,209.50, 117,196,822.74 and 54,041,045.74

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Solution

The fourth proportional to 78,147,209.50, 117,196,822.74 and 54,041,045.74 is: 81,044,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,147,209.50 : 117,196,822.74 = 54,041,045.74 : x
  2. Step 2: Convert to fraction form
    78,147,209.50/117,196,822.74 = 54,041,045.74/x
  3. Step 3: Cross multiply
    78,147,209.50x = 117,196,822.74 × 54,041,045.74
  4. Step 4: Simplify right side
    78,147,209.50x = 6,333,438,858,275,012
  5. Step 5: Solve for x
    x = 6,333,438,858,275,012/78,147,209.50
  6. Step 6: Final answer
    x = 81,044,977.79

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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.