Home / 70,609.12-97,440.72-38,780.08

Finding the Fourth Proportional to 70,609.12, 97,440.72 and 38,780.08

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Solution

The fourth proportional to 70,609.12, 97,440.72 and 38,780.08 is: 53,516.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,609.12 : 97,440.72 = 38,780.08 : x
  2. Step 2: Convert to fraction form
    70,609.12/97,440.72 = 38,780.08/x
  3. Step 3: Cross multiply
    70,609.12x = 97,440.72 × 38,780.08
  4. Step 4: Simplify right side
    70,609.12x = 3,778,758,916.86
  5. Step 5: Solve for x
    x = 3,778,758,916.86/70,609.12
  6. Step 6: Final answer
    x = 53,516.58

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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.