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Finding the Fourth Proportional to 72,423, 108,629.64 and 19,832.94

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Solution

The fourth proportional to 72,423, 108,629.64 and 19,832.94 is: 29,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,423 : 108,629.64 = 19,832.94 : x
  2. Step 2: Convert to fraction form
    72,423/108,629.64 = 19,832.94/x
  3. Step 3: Cross multiply
    72,423x = 108,629.64 × 19,832.94
  4. Step 4: Simplify right side
    72,423x = 2,154,445,132.34
  5. Step 5: Solve for x
    x = 2,154,445,132.34/72,423
  6. Step 6: Final answer
    x = 29,748.08

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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.