Home / 72,742,408.20-109,113,612.30-18,889,720.20

Finding the Fourth Proportional to 72,742,408.20, 109,113,612.30 and 18,889,720.20

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Solution

The fourth proportional to 72,742,408.20, 109,113,612.30 and 18,889,720.20 is: 28,334,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742,408.20 : 109,113,612.30 = 18,889,720.20 : x
  2. Step 2: Convert to fraction form
    72,742,408.20/109,113,612.30 = 18,889,720.20/x
  3. Step 3: Cross multiply
    72,742,408.20x = 109,113,612.30 × 18,889,720.20
  4. Step 4: Simplify right side
    72,742,408.20x = 2,061,125,606,358,278.25
  5. Step 5: Solve for x
    x = 2,061,125,606,358,278.25/72,742,408.20
  6. Step 6: Final answer
    x = 28,334,580.30

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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.