Home / 72,139,565.21-99,561,819.64-40,351,501.41

Finding the Fourth Proportional to 72,139,565.21, 99,561,819.64 and 40,351,501.41

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Solution

The fourth proportional to 72,139,565.21, 99,561,819.64 and 40,351,501.41 is: 55,690,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,139,565.21 : 99,561,819.64 = 40,351,501.41 : x
  2. Step 2: Convert to fraction form
    72,139,565.21/99,561,819.64 = 40,351,501.41/x
  3. Step 3: Cross multiply
    72,139,565.21x = 99,561,819.64 × 40,351,501.41
  4. Step 4: Simplify right side
    72,139,565.21x = 4,017,468,905,585,625.50
  5. Step 5: Solve for x
    x = 4,017,468,905,585,625.50/72,139,565.21
  6. Step 6: Final answer
    x = 55,690,228.99

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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.