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Finding the Fourth Proportional to 101,073.64, 139,474.02 and 56,353

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Solution

The fourth proportional to 101,073.64, 139,474.02 and 56,353 is: 77,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,073.64 : 139,474.02 = 56,353 : x
  2. Step 2: Convert to fraction form
    101,073.64/139,474.02 = 56,353/x
  3. Step 3: Cross multiply
    101,073.64x = 139,474.02 × 56,353
  4. Step 4: Simplify right side
    101,073.64x = 7,859,779,449.06
  5. Step 5: Solve for x
    x = 7,859,779,449.06/101,073.64
  6. Step 6: Final answer
    x = 77,762.90

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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.