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Finding the Fourth Proportional to 40,457.60, 60,688.20 and 13,803.20

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Solution

The fourth proportional to 40,457.60, 60,688.20 and 13,803.20 is: 20,705.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,457.60 : 60,688.20 = 13,803.20 : x
  2. Step 2: Convert to fraction form
    40,457.60/60,688.20 = 13,803.20/x
  3. Step 3: Cross multiply
    40,457.60x = 60,688.20 × 13,803.20
  4. Step 4: Simplify right side
    40,457.60x = 837,691,362.24
  5. Step 5: Solve for x
    x = 837,691,362.24/40,457.60
  6. Step 6: Final answer
    x = 20,705.41

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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.