Home / 72,579,938.40-108,869,907.60-27,132,328.80

Finding the Fourth Proportional to 72,579,938.40, 108,869,907.60 and 27,132,328.80

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Solution

The fourth proportional to 72,579,938.40, 108,869,907.60 and 27,132,328.80 is: 40,698,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,938.40 : 108,869,907.60 = 27,132,328.80 : x
  2. Step 2: Convert to fraction form
    72,579,938.40/108,869,907.60 = 27,132,328.80/x
  3. Step 3: Cross multiply
    72,579,938.40x = 108,869,907.60 × 27,132,328.80
  4. Step 4: Simplify right side
    72,579,938.40x = 2,953,894,129,428,819
  5. Step 5: Solve for x
    x = 2,953,894,129,428,819/72,579,938.40
  6. Step 6: Final answer
    x = 40,698,493.20

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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.