Home / 78,875.22-108,962.95-68,246.40

Finding the Fourth Proportional to 78,875.22, 108,962.95 and 68,246.40

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Solution

The fourth proportional to 78,875.22, 108,962.95 and 68,246.40 is: 94,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,875.22 : 108,962.95 = 68,246.40 : x
  2. Step 2: Convert to fraction form
    78,875.22/108,962.95 = 68,246.40/x
  3. Step 3: Cross multiply
    78,875.22x = 108,962.95 × 68,246.40
  4. Step 4: Simplify right side
    78,875.22x = 7,436,328,631.98
  5. Step 5: Solve for x
    x = 7,436,328,631.98/78,875.22
  6. Step 6: Final answer
    x = 94,279.66

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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.