Home / 78,623.40-108,508.95-48,402.66

Finding the Fourth Proportional to 78,623.40, 108,508.95 and 48,402.66

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Solution

The fourth proportional to 78,623.40, 108,508.95 and 48,402.66 is: 66,801.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,623.40 : 108,508.95 = 48,402.66 : x
  2. Step 2: Convert to fraction form
    78,623.40/108,508.95 = 48,402.66/x
  3. Step 3: Cross multiply
    78,623.40x = 108,508.95 × 48,402.66
  4. Step 4: Simplify right side
    78,623.40x = 5,252,121,813.81
  5. Step 5: Solve for x
    x = 5,252,121,813.81/78,623.40
  6. Step 6: Final answer
    x = 66,801.00

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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.