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Finding the Fourth Proportional to 42,602.60, 63,903.90 and 26,856.20

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Solution

The fourth proportional to 42,602.60, 63,903.90 and 26,856.20 is: 40,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,602.60 : 63,903.90 = 26,856.20 : x
  2. Step 2: Convert to fraction form
    42,602.60/63,903.90 = 26,856.20/x
  3. Step 3: Cross multiply
    42,602.60x = 63,903.90 × 26,856.20
  4. Step 4: Simplify right side
    42,602.60x = 1,716,215,919.18
  5. Step 5: Solve for x
    x = 1,716,215,919.18/42,602.60
  6. Step 6: Final answer
    x = 40,284.30

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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.