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Finding the Fourth Proportional to 70,013.76, 105,018.12 and 20,094.24

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Solution

The fourth proportional to 70,013.76, 105,018.12 and 20,094.24 is: 30,140.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,013.76 : 105,018.12 = 20,094.24 : x
  2. Step 2: Convert to fraction form
    70,013.76/105,018.12 = 20,094.24/x
  3. Step 3: Cross multiply
    70,013.76x = 105,018.12 × 20,094.24
  4. Step 4: Simplify right side
    70,013.76x = 2,110,259,307.63
  5. Step 5: Solve for x
    x = 2,110,259,307.63/70,013.76
  6. Step 6: Final answer
    x = 30,140.64

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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.