Home / 72,251.07-99,710.24-40,420.50

Finding the Fourth Proportional to 72,251.07, 99,710.24 and 40,420.50

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Solution

The fourth proportional to 72,251.07, 99,710.24 and 40,420.50 is: 55,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.07 : 99,710.24 = 40,420.50 : x
  2. Step 2: Convert to fraction form
    72,251.07/99,710.24 = 40,420.50/x
  3. Step 3: Cross multiply
    72,251.07x = 99,710.24 × 40,420.50
  4. Step 4: Simplify right side
    72,251.07x = 4,030,337,755.92
  5. Step 5: Solve for x
    x = 4,030,337,755.92/72,251.07
  6. Step 6: Final answer
    x = 55,782.40

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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.