Home / 72,331,329.75-99,805,402.64-42,587,043.43

Finding the Fourth Proportional to 72,331,329.75, 99,805,402.64 and 42,587,043.43

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Solution

The fourth proportional to 72,331,329.75, 99,805,402.64 and 42,587,043.43 is: 58,763,153.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,331,329.75 : 99,805,402.64 = 42,587,043.43 : x
  2. Step 2: Convert to fraction form
    72,331,329.75/99,805,402.64 = 42,587,043.43/x
  3. Step 3: Cross multiply
    72,331,329.75x = 99,805,402.64 × 42,587,043.43
  4. Step 4: Simplify right side
    72,331,329.75x = 4,250,417,016,279,289.50
  5. Step 5: Solve for x
    x = 4,250,417,016,279,289.50/72,331,329.75
  6. Step 6: Final answer
    x = 58,763,153.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.