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Finding the Fourth Proportional to 30,602,617.80, 45,903,926.70 and 10,407,859.80

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Solution

The fourth proportional to 30,602,617.80, 45,903,926.70 and 10,407,859.80 is: 15,611,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602,617.80 : 45,903,926.70 = 10,407,859.80 : x
  2. Step 2: Convert to fraction form
    30,602,617.80/45,903,926.70 = 10,407,859.80/x
  3. Step 3: Cross multiply
    30,602,617.80x = 45,903,926.70 × 10,407,859.80
  4. Step 4: Simplify right side
    30,602,617.80x = 477,761,633,363,076.75
  5. Step 5: Solve for x
    x = 477,761,633,363,076.75/30,602,617.80
  6. Step 6: Final answer
    x = 15,611,789.70

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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.