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Finding the Fourth Proportional to 70,986.30, 106,479.45 and 63,210.30

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Solution

The fourth proportional to 70,986.30, 106,479.45 and 63,210.30 is: 94,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,986.30 : 106,479.45 = 63,210.30 : x
  2. Step 2: Convert to fraction form
    70,986.30/106,479.45 = 63,210.30/x
  3. Step 3: Cross multiply
    70,986.30x = 106,479.45 × 63,210.30
  4. Step 4: Simplify right side
    70,986.30x = 6,730,597,978.34
  5. Step 5: Solve for x
    x = 6,730,597,978.34/70,986.30
  6. Step 6: Final answer
    x = 94,815.45

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Similar ratio
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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.