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Finding the Fourth Proportional to 67,765.76, 93,486.08 and 40,899.68

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Solution

The fourth proportional to 67,765.76, 93,486.08 and 40,899.68 is: 56,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,765.76 : 93,486.08 = 40,899.68 : x
  2. Step 2: Convert to fraction form
    67,765.76/93,486.08 = 40,899.68/x
  3. Step 3: Cross multiply
    67,765.76x = 93,486.08 × 40,899.68
  4. Step 4: Simplify right side
    67,765.76x = 3,823,550,756.45
  5. Step 5: Solve for x
    x = 3,823,550,756.45/67,765.76
  6. Step 6: Final answer
    x = 56,423.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.