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Finding the Fourth Proportional to 68,017.49, 93,920.78 and 56,746.07

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Solution

The fourth proportional to 68,017.49, 93,920.78 and 56,746.07 is: 78,356.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,017.49 : 93,920.78 = 56,746.07 : x
  2. Step 2: Convert to fraction form
    68,017.49/93,920.78 = 56,746.07/x
  3. Step 3: Cross multiply
    68,017.49x = 93,920.78 × 56,746.07
  4. Step 4: Simplify right side
    68,017.49x = 5,329,635,180.80
  5. Step 5: Solve for x
    x = 5,329,635,180.80/68,017.49
  6. Step 6: Final answer
    x = 78,356.84

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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.