Home / 78,521.16-108,360.27-42,712.68

Finding the Fourth Proportional to 78,521.16, 108,360.27 and 42,712.68

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Solution

The fourth proportional to 78,521.16, 108,360.27 and 42,712.68 is: 58,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,521.16 : 108,360.27 = 42,712.68 : x
  2. Step 2: Convert to fraction form
    78,521.16/108,360.27 = 42,712.68/x
  3. Step 3: Cross multiply
    78,521.16x = 108,360.27 × 42,712.68
  4. Step 4: Simplify right side
    78,521.16x = 4,628,357,537.22
  5. Step 5: Solve for x
    x = 4,628,357,537.22/78,521.16
  6. Step 6: Final answer
    x = 58,944.08

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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.