Home / 78,038.23-107,802.92-62,102.29

Finding the Fourth Proportional to 78,038.23, 107,802.92 and 62,102.29

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Solution

The fourth proportional to 78,038.23, 107,802.92 and 62,102.29 is: 85,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,038.23 : 107,802.92 = 62,102.29 : x
  2. Step 2: Convert to fraction form
    78,038.23/107,802.92 = 62,102.29/x
  3. Step 3: Cross multiply
    78,038.23x = 107,802.92 × 62,102.29
  4. Step 4: Simplify right side
    78,038.23x = 6,694,807,890.18
  5. Step 5: Solve for x
    x = 6,694,807,890.18/78,038.23
  6. Step 6: Final answer
    x = 85,788.82

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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.