Home / 74,521.13-102,840.77-40,987.13

Finding the Fourth Proportional to 74,521.13, 102,840.77 and 40,987.13

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Solution

The fourth proportional to 74,521.13, 102,840.77 and 40,987.13 is: 56,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,521.13 : 102,840.77 = 40,987.13 : x
  2. Step 2: Convert to fraction form
    74,521.13/102,840.77 = 40,987.13/x
  3. Step 3: Cross multiply
    74,521.13x = 102,840.77 × 40,987.13
  4. Step 4: Simplify right side
    74,521.13x = 4,215,147,597.55
  5. Step 5: Solve for x
    x = 4,215,147,597.55/74,521.13
  6. Step 6: Final answer
    x = 56,563.12

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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.