Home / 79,530.19-109,749.47-43,720.23

Finding the Fourth Proportional to 79,530.19, 109,749.47 and 43,720.23

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Solution

The fourth proportional to 79,530.19, 109,749.47 and 43,720.23 is: 60,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.19 : 109,749.47 = 43,720.23 : x
  2. Step 2: Convert to fraction form
    79,530.19/109,749.47 = 43,720.23/x
  3. Step 3: Cross multiply
    79,530.19x = 109,749.47 × 43,720.23
  4. Step 4: Simplify right side
    79,530.19x = 4,798,272,070.78
  5. Step 5: Solve for x
    x = 4,798,272,070.78/79,530.19
  6. Step 6: Final answer
    x = 60,332.71

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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.