Home / 72,904.13-100,607.69-39,370.13

Finding the Fourth Proportional to 72,904.13, 100,607.69 and 39,370.13

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Solution

The fourth proportional to 72,904.13, 100,607.69 and 39,370.13 is: 54,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,904.13 : 100,607.69 = 39,370.13 : x
  2. Step 2: Convert to fraction form
    72,904.13/100,607.69 = 39,370.13/x
  3. Step 3: Cross multiply
    72,904.13x = 100,607.69 × 39,370.13
  4. Step 4: Simplify right side
    72,904.13x = 3,960,937,429.69
  5. Step 5: Solve for x
    x = 3,960,937,429.69/72,904.13
  6. Step 6: Final answer
    x = 54,330.77

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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.