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Finding the Fourth Proportional to 43,790.79, 65,686.16 and 14,208.63

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Solution

The fourth proportional to 43,790.79, 65,686.16 and 14,208.63 is: 21,312.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,790.79 : 65,686.16 = 14,208.63 : x
  2. Step 2: Convert to fraction form
    43,790.79/65,686.16 = 14,208.63/x
  3. Step 3: Cross multiply
    43,790.79x = 65,686.16 × 14,208.63
  4. Step 4: Simplify right side
    43,790.79x = 933,310,343.56
  5. Step 5: Solve for x
    x = 933,310,343.56/43,790.79
  6. Step 6: Final answer
    x = 21,312.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.