Home / 78,437.09-108,331.32-60,746.09

Finding the Fourth Proportional to 78,437.09, 108,331.32 and 60,746.09

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Solution

The fourth proportional to 78,437.09, 108,331.32 and 60,746.09 is: 83,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,437.09 : 108,331.32 = 60,746.09 : x
  2. Step 2: Convert to fraction form
    78,437.09/108,331.32 = 60,746.09/x
  3. Step 3: Cross multiply
    78,437.09x = 108,331.32 × 60,746.09
  4. Step 4: Simplify right side
    78,437.09x = 6,580,703,800.68
  5. Step 5: Solve for x
    x = 6,580,703,800.68/78,437.09
  6. Step 6: Final answer
    x = 83,897.85

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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.