Home / 78,457.53-108,269.09-42,646.62

Finding the Fourth Proportional to 78,457.53, 108,269.09 and 42,646.62

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Solution

The fourth proportional to 78,457.53, 108,269.09 and 42,646.62 is: 58,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.53 : 108,269.09 = 42,646.62 : x
  2. Step 2: Convert to fraction form
    78,457.53/108,269.09 = 42,646.62/x
  3. Step 3: Cross multiply
    78,457.53x = 108,269.09 × 42,646.62
  4. Step 4: Simplify right side
    78,457.53x = 4,617,310,738.98
  5. Step 5: Solve for x
    x = 4,617,310,738.98/78,457.53
  6. Step 6: Final answer
    x = 58,851.08

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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.