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Finding the Fourth Proportional to 78,703.65, 108,569.30 and 48,495.51

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Solution

The fourth proportional to 78,703.65, 108,569.30 and 48,495.51 is: 66,898.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,703.65 : 108,569.30 = 48,495.51 : x
  2. Step 2: Convert to fraction form
    78,703.65/108,569.30 = 48,495.51/x
  3. Step 3: Cross multiply
    78,703.65x = 108,569.30 × 48,495.51
  4. Step 4: Simplify right side
    78,703.65x = 5,265,123,331.37
  5. Step 5: Solve for x
    x = 5,265,123,331.37/78,703.65
  6. Step 6: Final answer
    x = 66,898.08

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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.