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Finding the Fourth Proportional to 79,350,412.80, 118,878,652.80 and 45,170,227.20

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Solution

The fourth proportional to 79,350,412.80, 118,878,652.80 and 45,170,227.20 is: 67,671,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,350,412.80 : 118,878,652.80 = 45,170,227.20 : x
  2. Step 2: Convert to fraction form
    79,350,412.80/118,878,652.80 = 45,170,227.20/x
  3. Step 3: Cross multiply
    79,350,412.80x = 118,878,652.80 × 45,170,227.20
  4. Step 4: Simplify right side
    79,350,412.80x = 5,369,775,756,205,916
  5. Step 5: Solve for x
    x = 5,369,775,756,205,916/79,350,412.80
  6. Step 6: Final answer
    x = 67,671,680.17

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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.