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Finding the Fourth Proportional to 78,308.36, 108,065.52 and 44,316.12

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Solution

The fourth proportional to 78,308.36, 108,065.52 and 44,316.12 is: 61,156.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308.36 : 108,065.52 = 44,316.12 : x
  2. Step 2: Convert to fraction form
    78,308.36/108,065.52 = 44,316.12/x
  3. Step 3: Cross multiply
    78,308.36x = 108,065.52 × 44,316.12
  4. Step 4: Simplify right side
    78,308.36x = 4,789,044,552.18
  5. Step 5: Solve for x
    x = 4,789,044,552.18/78,308.36
  6. Step 6: Final answer
    x = 61,156.24

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1.5x scale

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.