Home / 78,623.18-108,497.46-42,812.90

Finding the Fourth Proportional to 78,623.18, 108,497.46 and 42,812.90

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Solution

The fourth proportional to 78,623.18, 108,497.46 and 42,812.90 is: 59,080.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,623.18 : 108,497.46 = 42,812.90 : x
  2. Step 2: Convert to fraction form
    78,623.18/108,497.46 = 42,812.90/x
  3. Step 3: Cross multiply
    78,623.18x = 108,497.46 × 42,812.90
  4. Step 4: Simplify right side
    78,623.18x = 4,645,090,905.23
  5. Step 5: Solve for x
    x = 4,645,090,905.23/78,623.18
  6. Step 6: Final answer
    x = 59,080.43

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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.