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Finding the Fourth Proportional to 62,111.80, 93,167.70 and 42,428.80

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Solution

The fourth proportional to 62,111.80, 93,167.70 and 42,428.80 is: 63,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,111.80 : 93,167.70 = 42,428.80 : x
  2. Step 2: Convert to fraction form
    62,111.80/93,167.70 = 42,428.80/x
  3. Step 3: Cross multiply
    62,111.80x = 93,167.70 × 42,428.80
  4. Step 4: Simplify right side
    62,111.80x = 3,952,993,709.76
  5. Step 5: Solve for x
    x = 3,952,993,709.76/62,111.80
  6. Step 6: Final answer
    x = 63,643.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.