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Finding the Fourth Proportional to 78,062.40, 107,658 and 62,950.68

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Solution

The fourth proportional to 78,062.40, 107,658 and 62,950.68 is: 86,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.40 : 107,658 = 62,950.68 : x
  2. Step 2: Convert to fraction form
    78,062.40/107,658 = 62,950.68/x
  3. Step 3: Cross multiply
    78,062.40x = 107,658 × 62,950.68
  4. Step 4: Simplify right side
    78,062.40x = 6,777,144,307.44
  5. Step 5: Solve for x
    x = 6,777,144,307.44/78,062.40
  6. Step 6: Final answer
    x = 86,817.01

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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.