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Finding the Fourth Proportional to 57,173.60, 79,031.76 and 47,686.88

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Solution

The fourth proportional to 57,173.60, 79,031.76 and 47,686.88 is: 65,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,173.60 : 79,031.76 = 47,686.88 : x
  2. Step 2: Convert to fraction form
    57,173.60/79,031.76 = 47,686.88/x
  3. Step 3: Cross multiply
    57,173.60x = 79,031.76 × 47,686.88
  4. Step 4: Simplify right side
    57,173.60x = 3,768,778,055.31
  5. Step 5: Solve for x
    x = 3,768,778,055.31/57,173.60
  6. Step 6: Final answer
    x = 65,918.15

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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.