Home / 70,979,447.28-106,458,491.76-19,854,839.28

Finding the Fourth Proportional to 70,979,447.28, 106,458,491.76 and 19,854,839.28

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Solution

The fourth proportional to 70,979,447.28, 106,458,491.76 and 19,854,839.28 is: 29,779,271.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,979,447.28 : 106,458,491.76 = 19,854,839.28 : x
  2. Step 2: Convert to fraction form
    70,979,447.28/106,458,491.76 = 19,854,839.28/x
  3. Step 3: Cross multiply
    70,979,447.28x = 106,458,491.76 × 19,854,839.28
  4. Step 4: Simplify right side
    70,979,447.28x = 2,113,716,243,886,004.50
  5. Step 5: Solve for x
    x = 2,113,716,243,886,004.50/70,979,447.28
  6. Step 6: Final answer
    x = 29,779,271.67

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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.