Home / 78,116,002.68-107,811,243.70-43,316,432.76

Finding the Fourth Proportional to 78,116,002.68, 107,811,243.70 and 43,316,432.76

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Solution

The fourth proportional to 78,116,002.68, 107,811,243.70 and 43,316,432.76 is: 59,782,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116,002.68 : 107,811,243.70 = 43,316,432.76 : x
  2. Step 2: Convert to fraction form
    78,116,002.68/107,811,243.70 = 43,316,432.76/x
  3. Step 3: Cross multiply
    78,116,002.68x = 107,811,243.70 × 43,316,432.76
  4. Step 4: Simplify right side
    78,116,002.68x = 4,669,998,488,503,024
  5. Step 5: Solve for x
    x = 4,669,998,488,503,024/78,116,002.68
  6. Step 6: Final answer
    x = 59,782,865.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.