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Finding the Fourth Proportional to 58,130.64, 79,697.79 and 57,080.88

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Solution

The fourth proportional to 58,130.64, 79,697.79 and 57,080.88 is: 78,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,130.64 : 79,697.79 = 57,080.88 : x
  2. Step 2: Convert to fraction form
    58,130.64/79,697.79 = 57,080.88/x
  3. Step 3: Cross multiply
    58,130.64x = 79,697.79 × 57,080.88
  4. Step 4: Simplify right side
    58,130.64x = 4,549,219,987.26
  5. Step 5: Solve for x
    x = 4,549,219,987.26/58,130.64
  6. Step 6: Final answer
    x = 78,258.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.