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Finding the Fourth Proportional to 145,672.65, 218,509.47 and 40,491.51

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Solution

The fourth proportional to 145,672.65, 218,509.47 and 40,491.51 is: 60,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,672.65 : 218,509.47 = 40,491.51 : x
  2. Step 2: Convert to fraction form
    145,672.65/218,509.47 = 40,491.51/x
  3. Step 3: Cross multiply
    145,672.65x = 218,509.47 × 40,491.51
  4. Step 4: Simplify right side
    145,672.65x = 8,847,778,389.60
  5. Step 5: Solve for x
    x = 8,847,778,389.60/145,672.65
  6. Step 6: Final answer
    x = 60,737.40

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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.