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Finding the Fourth Proportional to 75,328.20, 112,862.70 and 63,664.20

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Solution

The fourth proportional to 75,328.20, 112,862.70 and 63,664.20 is: 95,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,328.20 : 112,862.70 = 63,664.20 : x
  2. Step 2: Convert to fraction form
    75,328.20/112,862.70 = 63,664.20/x
  3. Step 3: Cross multiply
    75,328.20x = 112,862.70 × 63,664.20
  4. Step 4: Simplify right side
    75,328.20x = 7,185,313,505.34
  5. Step 5: Solve for x
    x = 7,185,313,505.34/75,328.20
  6. Step 6: Final answer
    x = 95,386.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.