Home / 77,252,021.20-115,966,505.40-45,357,288.40

Finding the Fourth Proportional to 77,252,021.20, 115,966,505.40 and 45,357,288.40

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Solution

The fourth proportional to 77,252,021.20, 115,966,505.40 and 45,357,288.40 is: 68,087,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,252,021.20 : 115,966,505.40 = 45,357,288.40 : x
  2. Step 2: Convert to fraction form
    77,252,021.20/115,966,505.40 = 45,357,288.40/x
  3. Step 3: Cross multiply
    77,252,021.20x = 115,966,505.40 × 45,357,288.40
  4. Step 4: Simplify right side
    77,252,021.20x = 5,259,926,230,167,957
  5. Step 5: Solve for x
    x = 5,259,926,230,167,957/77,252,021.20
  6. Step 6: Final answer
    x = 68,087,878.46

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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.