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Finding the Fourth Proportional to 64,842.73, 97,269.56 and 20,457.56

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Solution

The fourth proportional to 64,842.73, 97,269.56 and 20,457.56 is: 30,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,842.73 : 97,269.56 = 20,457.56 : x
  2. Step 2: Convert to fraction form
    64,842.73/97,269.56 = 20,457.56/x
  3. Step 3: Cross multiply
    64,842.73x = 97,269.56 × 20,457.56
  4. Step 4: Simplify right side
    64,842.73x = 1,989,898,077.48
  5. Step 5: Solve for x
    x = 1,989,898,077.48/64,842.73
  6. Step 6: Final answer
    x = 30,688.07

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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.