Home / 72,692,217.84-100,315,901.28-39,652,613.76

Finding the Fourth Proportional to 72,692,217.84, 100,315,901.28 and 39,652,613.76

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Solution

The fourth proportional to 72,692,217.84, 100,315,901.28 and 39,652,613.76 is: 54,720,956.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,692,217.84 : 100,315,901.28 = 39,652,613.76 : x
  2. Step 2: Convert to fraction form
    72,692,217.84/100,315,901.28 = 39,652,613.76/x
  3. Step 3: Cross multiply
    72,692,217.84x = 100,315,901.28 × 39,652,613.76
  4. Step 4: Simplify right side
    72,692,217.84x = 3,977,787,687,442,129.50
  5. Step 5: Solve for x
    x = 3,977,787,687,442,129.50/72,692,217.84
  6. Step 6: Final answer
    x = 54,720,956.46

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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.