Home / 78,275,117.60-117,412,676.40-73,811,013.20

Finding the Fourth Proportional to 78,275,117.60, 117,412,676.40 and 73,811,013.20

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Solution

The fourth proportional to 78,275,117.60, 117,412,676.40 and 73,811,013.20 is: 110,716,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,275,117.60 : 117,412,676.40 = 73,811,013.20 : x
  2. Step 2: Convert to fraction form
    78,275,117.60/117,412,676.40 = 73,811,013.20/x
  3. Step 3: Cross multiply
    78,275,117.60x = 117,412,676.40 × 73,811,013.20
  4. Step 4: Simplify right side
    78,275,117.60x = 8,666,348,607,607,729
  5. Step 5: Solve for x
    x = 8,666,348,607,607,729/78,275,117.60
  6. Step 6: Final answer
    x = 110,716,519.80

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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.