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Finding the Fourth Proportional to 70,627.36, 105,915.08 and 28,496.18

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Solution

The fourth proportional to 70,627.36, 105,915.08 and 28,496.18 is: 42,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,627.36 : 105,915.08 = 28,496.18 : x
  2. Step 2: Convert to fraction form
    70,627.36/105,915.08 = 28,496.18/x
  3. Step 3: Cross multiply
    70,627.36x = 105,915.08 × 28,496.18
  4. Step 4: Simplify right side
    70,627.36x = 3,018,175,184.39
  5. Step 5: Solve for x
    x = 3,018,175,184.39/70,627.36
  6. Step 6: Final answer
    x = 42,733.80

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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.