Home / 28,079,672.40-42,119,508.60-7,884,914.40

Finding the Fourth Proportional to 28,079,672.40, 42,119,508.60 and 7,884,914.40

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Solution

The fourth proportional to 28,079,672.40, 42,119,508.60 and 7,884,914.40 is: 11,827,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079,672.40 : 42,119,508.60 = 7,884,914.40 : x
  2. Step 2: Convert to fraction form
    28,079,672.40/42,119,508.60 = 7,884,914.40/x
  3. Step 3: Cross multiply
    28,079,672.40x = 42,119,508.60 × 7,884,914.40
  4. Step 4: Simplify right side
    28,079,672.40x = 332,108,719,881,063.88
  5. Step 5: Solve for x
    x = 332,108,719,881,063.88/28,079,672.40
  6. Step 6: Final answer
    x = 11,827,371.60

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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.