Home / 78,465.24-108,282.54-42,655.56

Finding the Fourth Proportional to 78,465.24, 108,282.54 and 42,655.56

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Solution

The fourth proportional to 78,465.24, 108,282.54 and 42,655.56 is: 58,864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,465.24 : 108,282.54 = 42,655.56 : x
  2. Step 2: Convert to fraction form
    78,465.24/108,282.54 = 42,655.56/x
  3. Step 3: Cross multiply
    78,465.24x = 108,282.54 × 42,655.56
  4. Step 4: Simplify right side
    78,465.24x = 4,618,852,381.92
  5. Step 5: Solve for x
    x = 4,618,852,381.92/78,465.24
  6. Step 6: Final answer
    x = 58,864.95

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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.