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Finding the Fourth Proportional to 68,695.80, 103,043.70 and 63,009.60

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Solution

The fourth proportional to 68,695.80, 103,043.70 and 63,009.60 is: 94,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,695.80 : 103,043.70 = 63,009.60 : x
  2. Step 2: Convert to fraction form
    68,695.80/103,043.70 = 63,009.60/x
  3. Step 3: Cross multiply
    68,695.80x = 103,043.70 × 63,009.60
  4. Step 4: Simplify right side
    68,695.80x = 6,492,742,319.52
  5. Step 5: Solve for x
    x = 6,492,742,319.52/68,695.80
  6. Step 6: Final answer
    x = 94,514.40

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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.