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Finding the Fourth Proportional to 64,856.40, 97,284.60 and 18,109.20

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Solution

The fourth proportional to 64,856.40, 97,284.60 and 18,109.20 is: 27,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,856.40 : 97,284.60 = 18,109.20 : x
  2. Step 2: Convert to fraction form
    64,856.40/97,284.60 = 18,109.20/x
  3. Step 3: Cross multiply
    64,856.40x = 97,284.60 × 18,109.20
  4. Step 4: Simplify right side
    64,856.40x = 1,761,746,278.32
  5. Step 5: Solve for x
    x = 1,761,746,278.32/64,856.40
  6. Step 6: Final answer
    x = 27,163.80

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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.