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Finding the Fourth Proportional to 101,748.01, 140,420.67 and 56,440.63

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Solution

The fourth proportional to 101,748.01, 140,420.67 and 56,440.63 is: 77,892.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,748.01 : 140,420.67 = 56,440.63 : x
  2. Step 2: Convert to fraction form
    101,748.01/140,420.67 = 56,440.63/x
  3. Step 3: Cross multiply
    101,748.01x = 140,420.67 × 56,440.63
  4. Step 4: Simplify right side
    101,748.01x = 7,925,431,079.82
  5. Step 5: Solve for x
    x = 7,925,431,079.82/101,748.01
  6. Step 6: Final answer
    x = 77,892.74

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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.