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Finding the Fourth Proportional to 101,531.42, 140,111.61 and 56,208.44

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Solution

The fourth proportional to 101,531.42, 140,111.61 and 56,208.44 is: 77,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,531.42 : 140,111.61 = 56,208.44 : x
  2. Step 2: Convert to fraction form
    101,531.42/140,111.61 = 56,208.44/x
  3. Step 3: Cross multiply
    101,531.42x = 140,111.61 × 56,208.44
  4. Step 4: Simplify right side
    101,531.42x = 7,875,455,023.99
  5. Step 5: Solve for x
    x = 7,875,455,023.99/101,531.42
  6. Step 6: Final answer
    x = 77,566.68

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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.