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Finding the Fourth Proportional to 64,886.79, 97,330.19 and 15,638.79

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Solution

The fourth proportional to 64,886.79, 97,330.19 and 15,638.79 is: 23,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,886.79 : 97,330.19 = 15,638.79 : x
  2. Step 2: Convert to fraction form
    64,886.79/97,330.19 = 15,638.79/x
  3. Step 3: Cross multiply
    64,886.79x = 97,330.19 × 15,638.79
  4. Step 4: Simplify right side
    64,886.79x = 1,522,126,323.88
  5. Step 5: Solve for x
    x = 1,522,126,323.88/64,886.79
  6. Step 6: Final answer
    x = 23,458.19

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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.