Home / 105,711.24-145,880.40-57,964.48

Finding the Fourth Proportional to 105,711.24, 145,880.40 and 57,964.48

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Solution

The fourth proportional to 105,711.24, 145,880.40 and 57,964.48 is: 79,990.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,711.24 : 145,880.40 = 57,964.48 : x
  2. Step 2: Convert to fraction form
    105,711.24/145,880.40 = 57,964.48/x
  3. Step 3: Cross multiply
    105,711.24x = 145,880.40 × 57,964.48
  4. Step 4: Simplify right side
    105,711.24x = 8,455,881,528.19
  5. Step 5: Solve for x
    x = 8,455,881,528.19/105,711.24
  6. Step 6: Final answer
    x = 79,990.37

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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.