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Finding the Fourth Proportional to 64,188.60, 96,282.90 and 42,070.20

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Solution

The fourth proportional to 64,188.60, 96,282.90 and 42,070.20 is: 63,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,188.60 : 96,282.90 = 42,070.20 : x
  2. Step 2: Convert to fraction form
    64,188.60/96,282.90 = 42,070.20/x
  3. Step 3: Cross multiply
    64,188.60x = 96,282.90 × 42,070.20
  4. Step 4: Simplify right side
    64,188.60x = 4,050,640,859.58
  5. Step 5: Solve for x
    x = 4,050,640,859.58/64,188.60
  6. Step 6: Final answer
    x = 63,105.30

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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.