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Finding the Fourth Proportional to 72,184,916.80, 108,229,552.80 and 39,852,308.80

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Solution

The fourth proportional to 72,184,916.80, 108,229,552.80 and 39,852,308.80 is: 59,752,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,184,916.80 : 108,229,552.80 = 39,852,308.80 : x
  2. Step 2: Convert to fraction form
    72,184,916.80/108,229,552.80 = 39,852,308.80/x
  3. Step 3: Cross multiply
    72,184,916.80x = 108,229,552.80 × 39,852,308.80
  4. Step 4: Simplify right side
    72,184,916.80x = 4,313,197,559,471,504
  5. Step 5: Solve for x
    x = 4,313,197,559,471,504/72,184,916.80
  6. Step 6: Final answer
    x = 59,752,061.10

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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.