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Finding the Fourth Proportional to 65,878.06, 90,964.14 and 60,840.44

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Solution

The fourth proportional to 65,878.06, 90,964.14 and 60,840.44 is: 84,008.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,878.06 : 90,964.14 = 60,840.44 : x
  2. Step 2: Convert to fraction form
    65,878.06/90,964.14 = 60,840.44/x
  3. Step 3: Cross multiply
    65,878.06x = 90,964.14 × 60,840.44
  4. Step 4: Simplify right side
    65,878.06x = 5,534,298,301.82
  5. Step 5: Solve for x
    x = 5,534,298,301.82/65,878.06
  6. Step 6: Final answer
    x = 84,008.22

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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.