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Finding the Fourth Proportional to 66,435.84, 99,213.36 and 58,387.68

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Solution

The fourth proportional to 66,435.84, 99,213.36 and 58,387.68 is: 87,194.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.84 : 99,213.36 = 58,387.68 : x
  2. Step 2: Convert to fraction form
    66,435.84/99,213.36 = 58,387.68/x
  3. Step 3: Cross multiply
    66,435.84x = 99,213.36 × 58,387.68
  4. Step 4: Simplify right side
    66,435.84x = 5,792,837,915.40
  5. Step 5: Solve for x
    x = 5,792,837,915.40/66,435.84
  6. Step 6: Final answer
    x = 87,194.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.