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Finding the Fourth Proportional to 81,711.93, 112,750.18 and 45,895.08

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Solution

The fourth proportional to 81,711.93, 112,750.18 and 45,895.08 is: 63,328.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,711.93 : 112,750.18 = 45,895.08 : x
  2. Step 2: Convert to fraction form
    81,711.93/112,750.18 = 45,895.08/x
  3. Step 3: Cross multiply
    81,711.93x = 112,750.18 × 45,895.08
  4. Step 4: Simplify right side
    81,711.93x = 5,174,677,737.89
  5. Step 5: Solve for x
    x = 5,174,677,737.89/81,711.93
  6. Step 6: Final answer
    x = 63,328.31

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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.