Home / 78,953.04-108,956.16-43,143.48

Finding the Fourth Proportional to 78,953.04, 108,956.16 and 43,143.48

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Solution

The fourth proportional to 78,953.04, 108,956.16 and 43,143.48 is: 59,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,953.04 : 108,956.16 = 43,143.48 : x
  2. Step 2: Convert to fraction form
    78,953.04/108,956.16 = 43,143.48/x
  3. Step 3: Cross multiply
    78,953.04x = 108,956.16 × 43,143.48
  4. Step 4: Simplify right side
    78,953.04x = 4,700,747,909.84
  5. Step 5: Solve for x
    x = 4,700,747,909.84/78,953.04
  6. Step 6: Final answer
    x = 59,538.53

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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.