Home / 72,038.08-99,408.90-40,211.56

Finding the Fourth Proportional to 72,038.08, 99,408.90 and 40,211.56

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Solution

The fourth proportional to 72,038.08, 99,408.90 and 40,211.56 is: 55,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.08 : 99,408.90 = 40,211.56 : x
  2. Step 2: Convert to fraction form
    72,038.08/99,408.90 = 40,211.56/x
  3. Step 3: Cross multiply
    72,038.08x = 99,408.90 × 40,211.56
  4. Step 4: Simplify right side
    72,038.08x = 3,997,386,946.88
  5. Step 5: Solve for x
    x = 3,997,386,946.88/72,038.08
  6. Step 6: Final answer
    x = 55,489.92

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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.