Home / 78,900.04-108,882.66-43,089.40

Finding the Fourth Proportional to 78,900.04, 108,882.66 and 43,089.40

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Solution

The fourth proportional to 78,900.04, 108,882.66 and 43,089.40 is: 59,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,900.04 : 108,882.66 = 43,089.40 : x
  2. Step 2: Convert to fraction form
    78,900.04/108,882.66 = 43,089.40/x
  3. Step 3: Cross multiply
    78,900.04x = 108,882.66 × 43,089.40
  4. Step 4: Simplify right side
    78,900.04x = 4,691,688,489.80
  5. Step 5: Solve for x
    x = 4,691,688,489.80/78,900.04
  6. Step 6: Final answer
    x = 59,463.70

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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.