Home / 78,646.29-108,533.10-42,836.28

Finding the Fourth Proportional to 78,646.29, 108,533.10 and 42,836.28

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Solution

The fourth proportional to 78,646.29, 108,533.10 and 42,836.28 is: 59,114.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,646.29 : 108,533.10 = 42,836.28 : x
  2. Step 2: Convert to fraction form
    78,646.29/108,533.10 = 42,836.28/x
  3. Step 3: Cross multiply
    78,646.29x = 108,533.10 × 42,836.28
  4. Step 4: Simplify right side
    78,646.29x = 4,649,154,260.87
  5. Step 5: Solve for x
    x = 4,649,154,260.87/78,646.29
  6. Step 6: Final answer
    x = 59,114.73

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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.