Home / 70,394.13-97,143.30-38,128.79

Finding the Fourth Proportional to 70,394.13, 97,143.30 and 38,128.79

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Solution

The fourth proportional to 70,394.13, 97,143.30 and 38,128.79 is: 52,617.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,394.13 : 97,143.30 = 38,128.79 : x
  2. Step 2: Convert to fraction form
    70,394.13/97,143.30 = 38,128.79/x
  3. Step 3: Cross multiply
    70,394.13x = 97,143.30 × 38,128.79
  4. Step 4: Simplify right side
    70,394.13x = 3,703,956,728.47
  5. Step 5: Solve for x
    x = 3,703,956,728.47/70,394.13
  6. Step 6: Final answer
    x = 52,617.41

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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.