Home / 78,276.50-108,021.89-42,466.77

Finding the Fourth Proportional to 78,276.50, 108,021.89 and 42,466.77

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Solution

The fourth proportional to 78,276.50, 108,021.89 and 42,466.77 is: 58,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.50 : 108,021.89 = 42,466.77 : x
  2. Step 2: Convert to fraction form
    78,276.50/108,021.89 = 42,466.77/x
  3. Step 3: Cross multiply
    78,276.50x = 108,021.89 × 42,466.77
  4. Step 4: Simplify right side
    78,276.50x = 4,587,340,545.26
  5. Step 5: Solve for x
    x = 4,587,340,545.26/78,276.50
  6. Step 6: Final answer
    x = 58,604.32

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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.