Home / 78,594.46-117,357.10-74,154.51

Finding the Fourth Proportional to 78,594.46, 117,357.10 and 74,154.51

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Solution

The fourth proportional to 78,594.46, 117,357.10 and 74,154.51 is: 110,727.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,594.46 : 117,357.10 = 74,154.51 : x
  2. Step 2: Convert to fraction form
    78,594.46/117,357.10 = 74,154.51/x
  3. Step 3: Cross multiply
    78,594.46x = 117,357.10 × 74,154.51
  4. Step 4: Simplify right side
    78,594.46x = 8,702,558,060.13
  5. Step 5: Solve for x
    x = 8,702,558,060.13/78,594.46
  6. Step 6: Final answer
    x = 110,727.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.