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Finding the Fourth Proportional to 30,497,683.20, 45,781,954.20 and 18,380,828.40

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Solution

The fourth proportional to 30,497,683.20, 45,781,954.20 and 18,380,828.40 is: 27,592,595.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,497,683.20 : 45,781,954.20 = 18,380,828.40 : x
  2. Step 2: Convert to fraction form
    30,497,683.20/45,781,954.20 = 18,380,828.40/x
  3. Step 3: Cross multiply
    30,497,683.20x = 45,781,954.20 × 18,380,828.40
  4. Step 4: Simplify right side
    30,497,683.20x = 841,510,243,966,859.25
  5. Step 5: Solve for x
    x = 841,510,243,966,859.25/30,497,683.20
  6. Step 6: Final answer
    x = 27,592,595.75

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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.