Home / 72,239.52-99,688.50-40,408.68

Finding the Fourth Proportional to 72,239.52, 99,688.50 and 40,408.68

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Solution

The fourth proportional to 72,239.52, 99,688.50 and 40,408.68 is: 55,762.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,239.52 : 99,688.50 = 40,408.68 : x
  2. Step 2: Convert to fraction form
    72,239.52/99,688.50 = 40,408.68/x
  3. Step 3: Cross multiply
    72,239.52x = 99,688.50 × 40,408.68
  4. Step 4: Simplify right side
    72,239.52x = 4,028,280,696.18
  5. Step 5: Solve for x
    x = 4,028,280,696.18/72,239.52
  6. Step 6: Final answer
    x = 55,762.84

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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.