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Finding the Fourth Proportional to 65,487.84, 90,301.66 and 44,230.20

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Solution

The fourth proportional to 65,487.84, 90,301.66 and 44,230.20 is: 60,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,487.84 : 90,301.66 = 44,230.20 : x
  2. Step 2: Convert to fraction form
    65,487.84/90,301.66 = 44,230.20/x
  3. Step 3: Cross multiply
    65,487.84x = 90,301.66 × 44,230.20
  4. Step 4: Simplify right side
    65,487.84x = 3,994,060,482.13
  5. Step 5: Solve for x
    x = 3,994,060,482.13/65,487.84
  6. Step 6: Final answer
    x = 60,989.35

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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.