Home / 70,010.64-105,001.56-20,079.72

Finding the Fourth Proportional to 70,010.64, 105,001.56 and 20,079.72

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Solution

The fourth proportional to 70,010.64, 105,001.56 and 20,079.72 is: 30,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,010.64 : 105,001.56 = 20,079.72 : x
  2. Step 2: Convert to fraction form
    70,010.64/105,001.56 = 20,079.72/x
  3. Step 3: Cross multiply
    70,010.64x = 105,001.56 × 20,079.72
  4. Step 4: Simplify right side
    70,010.64x = 2,108,401,924.36
  5. Step 5: Solve for x
    x = 2,108,401,924.36/70,010.64
  6. Step 6: Final answer
    x = 30,115.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.