Home / 66,307.20-91,441.08-51,175.62

Finding the Fourth Proportional to 66,307.20, 91,441.08 and 51,175.62

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Solution

The fourth proportional to 66,307.20, 91,441.08 and 51,175.62 is: 70,573.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307.20 : 91,441.08 = 51,175.62 : x
  2. Step 2: Convert to fraction form
    66,307.20/91,441.08 = 51,175.62/x
  3. Step 3: Cross multiply
    66,307.20x = 91,441.08 × 51,175.62
  4. Step 4: Simplify right side
    66,307.20x = 4,679,553,962.47
  5. Step 5: Solve for x
    x = 4,679,553,962.47/66,307.20
  6. Step 6: Final answer
    x = 70,573.84

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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.