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Finding the Fourth Proportional to 96,669.40, 144,888.90 and 40,509.40

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Solution

The fourth proportional to 96,669.40, 144,888.90 and 40,509.40 is: 60,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,669.40 : 144,888.90 = 40,509.40 : x
  2. Step 2: Convert to fraction form
    96,669.40/144,888.90 = 40,509.40/x
  3. Step 3: Cross multiply
    96,669.40x = 144,888.90 × 40,509.40
  4. Step 4: Simplify right side
    96,669.40x = 5,869,362,405.66
  5. Step 5: Solve for x
    x = 5,869,362,405.66/96,669.40
  6. Step 6: Final answer
    x = 60,715.83

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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.