Home / 42,431.07-63,549.72-20,260.02

Finding the Fourth Proportional to 42,431.07, 63,549.72 and 20,260.02

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Solution

The fourth proportional to 42,431.07, 63,549.72 and 20,260.02 is: 30,343.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,431.07 : 63,549.72 = 20,260.02 : x
  2. Step 2: Convert to fraction form
    42,431.07/63,549.72 = 20,260.02/x
  3. Step 3: Cross multiply
    42,431.07x = 63,549.72 × 20,260.02
  4. Step 4: Simplify right side
    42,431.07x = 1,287,518,598.19
  5. Step 5: Solve for x
    x = 1,287,518,598.19/42,431.07
  6. Step 6: Final answer
    x = 30,343.77

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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.