Home / 70,167,789.38-105,243,642.66-18,357,391.78

Finding the Fourth Proportional to 70,167,789.38, 105,243,642.66 and 18,357,391.78

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Solution

The fourth proportional to 70,167,789.38, 105,243,642.66 and 18,357,391.78 is: 27,533,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,167,789.38 : 105,243,642.66 = 18,357,391.78 : x
  2. Step 2: Convert to fraction form
    70,167,789.38/105,243,642.66 = 18,357,391.78/x
  3. Step 3: Cross multiply
    70,167,789.38x = 105,243,642.66 × 18,357,391.78
  4. Step 4: Simplify right side
    70,167,789.38x = 1,931,998,780,663,941.50
  5. Step 5: Solve for x
    x = 1,931,998,780,663,941.50/70,167,789.38
  6. Step 6: Final answer
    x = 27,533,983.87

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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.