Home / 72,038.35-99,410.86-40,206.57

Finding the Fourth Proportional to 72,038.35, 99,410.86 and 40,206.57

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Solution

The fourth proportional to 72,038.35, 99,410.86 and 40,206.57 is: 55,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.35 : 99,410.86 = 40,206.57 : x
  2. Step 2: Convert to fraction form
    72,038.35/99,410.86 = 40,206.57/x
  3. Step 3: Cross multiply
    72,038.35x = 99,410.86 × 40,206.57
  4. Step 4: Simplify right side
    72,038.35x = 3,996,969,701.35
  5. Step 5: Solve for x
    x = 3,996,969,701.35/72,038.35
  6. Step 6: Final answer
    x = 55,483.92

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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.