Home / 75,420.55-113,130.72-19,260.63

Finding the Fourth Proportional to 75,420.55, 113,130.72 and 19,260.63

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Solution

The fourth proportional to 75,420.55, 113,130.72 and 19,260.63 is: 28,890.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.55 : 113,130.72 = 19,260.63 : x
  2. Step 2: Convert to fraction form
    75,420.55/113,130.72 = 19,260.63/x
  3. Step 3: Cross multiply
    75,420.55x = 113,130.72 × 19,260.63
  4. Step 4: Simplify right side
    75,420.55x = 2,178,968,939.55
  5. Step 5: Solve for x
    x = 2,178,968,939.55/75,420.55
  6. Step 6: Final answer
    x = 28,890.92

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1.5x scale

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.