Home / 78,878.21-108,854.51-43,070.94

Finding the Fourth Proportional to 78,878.21, 108,854.51 and 43,070.94

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Solution

The fourth proportional to 78,878.21, 108,854.51 and 43,070.94 is: 59,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,878.21 : 108,854.51 = 43,070.94 : x
  2. Step 2: Convert to fraction form
    78,878.21/108,854.51 = 43,070.94/x
  3. Step 3: Cross multiply
    78,878.21x = 108,854.51 × 43,070.94
  4. Step 4: Simplify right side
    78,878.21x = 4,688,465,853.58
  5. Step 5: Solve for x
    x = 4,688,465,853.58/78,878.21
  6. Step 6: Final answer
    x = 59,439.31

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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.