Home / 72,857,235.65-109,254,745.49-42,172,994.79

Finding the Fourth Proportional to 72,857,235.65, 109,254,745.49 and 42,172,994.79

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Solution

The fourth proportional to 72,857,235.65, 109,254,745.49 and 42,172,994.79 is: 63,241,485.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,857,235.65 : 109,254,745.49 = 42,172,994.79 : x
  2. Step 2: Convert to fraction form
    72,857,235.65/109,254,745.49 = 42,172,994.79/x
  3. Step 3: Cross multiply
    72,857,235.65x = 109,254,745.49 × 42,172,994.79
  4. Step 4: Simplify right side
    72,857,235.65x = 4,607,599,812,121,681
  5. Step 5: Solve for x
    x = 4,607,599,812,121,681/72,857,235.65
  6. Step 6: Final answer
    x = 63,241,485.51

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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.