Home / 30,219,500.70-45,312,629.76-20,645,689.50

Finding the Fourth Proportional to 30,219,500.70, 45,312,629.76 and 20,645,689.50

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Solution

The fourth proportional to 30,219,500.70, 45,312,629.76 and 20,645,689.50 is: 30,957,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219,500.70 : 45,312,629.76 = 20,645,689.50 : x
  2. Step 2: Convert to fraction form
    30,219,500.70/45,312,629.76 = 20,645,689.50/x
  3. Step 3: Cross multiply
    30,219,500.70x = 45,312,629.76 × 20,645,689.50
  4. Step 4: Simplify right side
    30,219,500.70x = 935,510,484,453,419.50
  5. Step 5: Solve for x
    x = 935,510,484,453,419.50/30,219,500.70
  6. Step 6: Final answer
    x = 30,957,178.74

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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.