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Finding the Fourth Proportional to 57,712.64, 79,597.28 and 39,803.52

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Solution

The fourth proportional to 57,712.64, 79,597.28 and 39,803.52 is: 54,897.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,712.64 : 79,597.28 = 39,803.52 : x
  2. Step 2: Convert to fraction form
    57,712.64/79,597.28 = 39,803.52/x
  3. Step 3: Cross multiply
    57,712.64x = 79,597.28 × 39,803.52
  4. Step 4: Simplify right side
    57,712.64x = 3,168,251,926.43
  5. Step 5: Solve for x
    x = 3,168,251,926.43/57,712.64
  6. Step 6: Final answer
    x = 54,897.02

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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.