Home / 78,525.96-108,317.18-68,478.51

Finding the Fourth Proportional to 78,525.96, 108,317.18 and 68,478.51

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Solution

The fourth proportional to 78,525.96, 108,317.18 and 68,478.51 is: 94,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,525.96 : 108,317.18 = 68,478.51 : x
  2. Step 2: Convert to fraction form
    78,525.96/108,317.18 = 68,478.51/x
  3. Step 3: Cross multiply
    78,525.96x = 108,317.18 × 68,478.51
  4. Step 4: Simplify right side
    78,525.96x = 7,417,399,671.19
  5. Step 5: Solve for x
    x = 7,417,399,671.19/78,525.96
  6. Step 6: Final answer
    x = 94,457.93

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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.