Home / 72,038.41-99,418.64-40,212.10

Finding the Fourth Proportional to 72,038.41, 99,418.64 and 40,212.10

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Solution

The fourth proportional to 72,038.41, 99,418.64 and 40,212.10 is: 55,495.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.41 : 99,418.64 = 40,212.10 : x
  2. Step 2: Convert to fraction form
    72,038.41/99,418.64 = 40,212.10/x
  3. Step 3: Cross multiply
    72,038.41x = 99,418.64 × 40,212.10
  4. Step 4: Simplify right side
    72,038.41x = 3,997,832,293.54
  5. Step 5: Solve for x
    x = 3,997,832,293.54/72,038.41
  6. Step 6: Final answer
    x = 55,495.84

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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.