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Finding the Fourth Proportional to 84,061.40, 116,020.15 and 53,859.74

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Solution

The fourth proportional to 84,061.40, 116,020.15 and 53,859.74 is: 74,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,061.40 : 116,020.15 = 53,859.74 : x
  2. Step 2: Convert to fraction form
    84,061.40/116,020.15 = 53,859.74/x
  3. Step 3: Cross multiply
    84,061.40x = 116,020.15 × 53,859.74
  4. Step 4: Simplify right side
    84,061.40x = 6,248,814,399.01
  5. Step 5: Solve for x
    x = 6,248,814,399.01/84,061.40
  6. Step 6: Final answer
    x = 74,336.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.