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Finding the Fourth Proportional to 64,242.88, 88,615.20 and 41,886.40

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Solution

The fourth proportional to 64,242.88, 88,615.20 and 41,886.40 is: 57,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,242.88 : 88,615.20 = 41,886.40 : x
  2. Step 2: Convert to fraction form
    64,242.88/88,615.20 = 41,886.40/x
  3. Step 3: Cross multiply
    64,242.88x = 88,615.20 × 41,886.40
  4. Step 4: Simplify right side
    64,242.88x = 3,711,771,713.28
  5. Step 5: Solve for x
    x = 3,711,771,713.28/64,242.88
  6. Step 6: Final answer
    x = 57,777.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.