Home / 70,345.38-97,072.80-38,508.12

Finding the Fourth Proportional to 70,345.38, 97,072.80 and 38,508.12

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Solution

The fourth proportional to 70,345.38, 97,072.80 and 38,508.12 is: 53,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,345.38 : 97,072.80 = 38,508.12 : x
  2. Step 2: Convert to fraction form
    70,345.38/97,072.80 = 38,508.12/x
  3. Step 3: Cross multiply
    70,345.38x = 97,072.80 × 38,508.12
  4. Step 4: Simplify right side
    70,345.38x = 3,738,091,031.14
  5. Step 5: Solve for x
    x = 3,738,091,031.14/70,345.38
  6. Step 6: Final answer
    x = 53,139.11

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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.