Home / 78,032.19-107,688.23-47,819.19

Finding the Fourth Proportional to 78,032.19, 107,688.23 and 47,819.19

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Solution

The fourth proportional to 78,032.19, 107,688.23 and 47,819.19 is: 65,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,032.19 : 107,688.23 = 47,819.19 : x
  2. Step 2: Convert to fraction form
    78,032.19/107,688.23 = 47,819.19/x
  3. Step 3: Cross multiply
    78,032.19x = 107,688.23 × 47,819.19
  4. Step 4: Simplify right side
    78,032.19x = 5,149,564,544.17
  5. Step 5: Solve for x
    x = 5,149,564,544.17/78,032.19
  6. Step 6: Final answer
    x = 65,992.82

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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.