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Finding the Fourth Proportional to 65,589.84, 98,401.68 and 30,488.40

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Solution

The fourth proportional to 65,589.84, 98,401.68 and 30,488.40 is: 45,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,589.84 : 98,401.68 = 30,488.40 : x
  2. Step 2: Convert to fraction form
    65,589.84/98,401.68 = 30,488.40/x
  3. Step 3: Cross multiply
    65,589.84x = 98,401.68 × 30,488.40
  4. Step 4: Simplify right side
    65,589.84x = 3,000,109,780.51
  5. Step 5: Solve for x
    x = 3,000,109,780.51/65,589.84
  6. Step 6: Final answer
    x = 45,740.46

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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.