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Finding the Fourth Proportional to 79,421.64, 109,603.79 and 43,124.63

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Solution

The fourth proportional to 79,421.64, 109,603.79 and 43,124.63 is: 59,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,421.64 : 109,603.79 = 43,124.63 : x
  2. Step 2: Convert to fraction form
    79,421.64/109,603.79 = 43,124.63/x
  3. Step 3: Cross multiply
    79,421.64x = 109,603.79 × 43,124.63
  4. Step 4: Simplify right side
    79,421.64x = 4,726,622,126.71
  5. Step 5: Solve for x
    x = 4,726,622,126.71/79,421.64
  6. Step 6: Final answer
    x = 59,513.03

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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.