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Finding the Fourth Proportional to 101,811.49, 140,499.67 and 56,496.37

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Solution

The fourth proportional to 101,811.49, 140,499.67 and 56,496.37 is: 77,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,811.49 : 140,499.67 = 56,496.37 : x
  2. Step 2: Convert to fraction form
    101,811.49/140,499.67 = 56,496.37/x
  3. Step 3: Cross multiply
    101,811.49x = 140,499.67 × 56,496.37
  4. Step 4: Simplify right side
    101,811.49x = 7,937,721,341.20
  5. Step 5: Solve for x
    x = 7,937,721,341.20/101,811.49
  6. Step 6: Final answer
    x = 77,964.89

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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.