Home / 78,465.06-108,282.49-42,655.14

Finding the Fourth Proportional to 78,465.06, 108,282.49 and 42,655.14

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Solution

The fourth proportional to 78,465.06, 108,282.49 and 42,655.14 is: 58,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,465.06 : 108,282.49 = 42,655.14 : x
  2. Step 2: Convert to fraction form
    78,465.06/108,282.49 = 42,655.14/x
  3. Step 3: Cross multiply
    78,465.06x = 108,282.49 × 42,655.14
  4. Step 4: Simplify right side
    78,465.06x = 4,618,804,663.86
  5. Step 5: Solve for x
    x = 4,618,804,663.86/78,465.06
  6. Step 6: Final answer
    x = 58,864.48

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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.