Home / 78,955.07-108,953.37-43,145.36

Finding the Fourth Proportional to 78,955.07, 108,953.37 and 43,145.36

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Solution

The fourth proportional to 78,955.07, 108,953.37 and 43,145.36 is: 59,538.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955.07 : 108,953.37 = 43,145.36 : x
  2. Step 2: Convert to fraction form
    78,955.07/108,953.37 = 43,145.36/x
  3. Step 3: Cross multiply
    78,955.07x = 108,953.37 × 43,145.36
  4. Step 4: Simplify right side
    78,955.07x = 4,700,832,371.86
  5. Step 5: Solve for x
    x = 4,700,832,371.86/78,955.07
  6. Step 6: Final answer
    x = 59,538.07

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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.