Home / 78,869.36-108,835.08-45,335.36

Finding the Fourth Proportional to 78,869.36, 108,835.08 and 45,335.36

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Solution

The fourth proportional to 78,869.36, 108,835.08 and 45,335.36 is: 62,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.36 : 108,835.08 = 45,335.36 : x
  2. Step 2: Convert to fraction form
    78,869.36/108,835.08 = 45,335.36/x
  3. Step 3: Cross multiply
    78,869.36x = 108,835.08 × 45,335.36
  4. Step 4: Simplify right side
    78,869.36x = 4,934,077,532.43
  5. Step 5: Solve for x
    x = 4,934,077,532.43/78,869.36
  6. Step 6: Final answer
    x = 62,560.13

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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.