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Finding the Fourth Proportional to 101,810.71, 140,515.64 and 56,503.25

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Solution

The fourth proportional to 101,810.71, 140,515.64 and 56,503.25 is: 77,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,810.71 : 140,515.64 = 56,503.25 : x
  2. Step 2: Convert to fraction form
    101,810.71/140,515.64 = 56,503.25/x
  3. Step 3: Cross multiply
    101,810.71x = 140,515.64 × 56,503.25
  4. Step 4: Simplify right side
    101,810.71x = 7,939,589,350.74
  5. Step 5: Solve for x
    x = 7,939,589,350.74/101,810.71
  6. Step 6: Final answer
    x = 77,983.83

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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.