Home / 89,287.20-133,712.10-42,485.40

Finding the Fourth Proportional to 89,287.20, 133,712.10 and 42,485.40

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Solution

The fourth proportional to 89,287.20, 133,712.10 and 42,485.40 is: 63,624.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,287.20 : 133,712.10 = 42,485.40 : x
  2. Step 2: Convert to fraction form
    89,287.20/133,712.10 = 42,485.40/x
  3. Step 3: Cross multiply
    89,287.20x = 133,712.10 × 42,485.40
  4. Step 4: Simplify right side
    89,287.20x = 5,680,812,053.34
  5. Step 5: Solve for x
    x = 5,680,812,053.34/89,287.20
  6. Step 6: Final answer
    x = 63,624.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.