Home / 42,421.70-63,632.55-40,672.10

Finding the Fourth Proportional to 42,421.70, 63,632.55 and 40,672.10

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Solution

The fourth proportional to 42,421.70, 63,632.55 and 40,672.10 is: 61,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,421.70 : 63,632.55 = 40,672.10 : x
  2. Step 2: Convert to fraction form
    42,421.70/63,632.55 = 40,672.10/x
  3. Step 3: Cross multiply
    42,421.70x = 63,632.55 × 40,672.10
  4. Step 4: Simplify right side
    42,421.70x = 2,588,069,436.86
  5. Step 5: Solve for x
    x = 2,588,069,436.86/42,421.70
  6. Step 6: Final answer
    x = 61,008.15

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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.