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Finding the Fourth Proportional to 85,981.84, 118,652.74 and 47,740.21

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Solution

The fourth proportional to 85,981.84, 118,652.74 and 47,740.21 is: 65,880.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.84 : 118,652.74 = 47,740.21 : x
  2. Step 2: Convert to fraction form
    85,981.84/118,652.74 = 47,740.21/x
  3. Step 3: Cross multiply
    85,981.84x = 118,652.74 × 47,740.21
  4. Step 4: Simplify right side
    85,981.84x = 5,664,506,308.69
  5. Step 5: Solve for x
    x = 5,664,506,308.69/85,981.84
  6. Step 6: Final answer
    x = 65,880.27

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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.