Home / 78,882.15-108,857.51-43,071.40

Finding the Fourth Proportional to 78,882.15, 108,857.51 and 43,071.40

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Solution

The fourth proportional to 78,882.15, 108,857.51 and 43,071.40 is: 59,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,882.15 : 108,857.51 = 43,071.40 : x
  2. Step 2: Convert to fraction form
    78,882.15/108,857.51 = 43,071.40/x
  3. Step 3: Cross multiply
    78,882.15x = 108,857.51 × 43,071.40
  4. Step 4: Simplify right side
    78,882.15x = 4,688,645,356.21
  5. Step 5: Solve for x
    x = 4,688,645,356.21/78,882.15
  6. Step 6: Final answer
    x = 59,438.61

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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.