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Finding the Fourth Proportional to 78,354.36, 108,129.02 and 44,820.36

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Solution

The fourth proportional to 78,354.36, 108,129.02 and 44,820.36 is: 61,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,354.36 : 108,129.02 = 44,820.36 : x
  2. Step 2: Convert to fraction form
    78,354.36/108,129.02 = 44,820.36/x
  3. Step 3: Cross multiply
    78,354.36x = 108,129.02 × 44,820.36
  4. Step 4: Simplify right side
    78,354.36x = 4,846,381,434.77
  5. Step 5: Solve for x
    x = 4,846,381,434.77/78,354.36
  6. Step 6: Final answer
    x = 61,852.10

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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.