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Finding the Fourth Proportional to 52,457.20, 78,880.20 and 43,903.60

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Solution

The fourth proportional to 52,457.20, 78,880.20 and 43,903.60 is: 66,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,457.20 : 78,880.20 = 43,903.60 : x
  2. Step 2: Convert to fraction form
    52,457.20/78,880.20 = 43,903.60/x
  3. Step 3: Cross multiply
    52,457.20x = 78,880.20 × 43,903.60
  4. Step 4: Simplify right side
    52,457.20x = 3,463,124,748.72
  5. Step 5: Solve for x
    x = 3,463,124,748.72/52,457.20
  6. Step 6: Final answer
    x = 66,018.10

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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.