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Finding the Fourth Proportional to 47,000.79, 70,484.76 and 18,913.56

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Solution

The fourth proportional to 47,000.79, 70,484.76 and 18,913.56 is: 28,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,000.79 : 70,484.76 = 18,913.56 : x
  2. Step 2: Convert to fraction form
    47,000.79/70,484.76 = 18,913.56/x
  3. Step 3: Cross multiply
    47,000.79x = 70,484.76 × 18,913.56
  4. Step 4: Simplify right side
    47,000.79x = 1,333,117,473.03
  5. Step 5: Solve for x
    x = 1,333,117,473.03/47,000.79
  6. Step 6: Final answer
    x = 28,363.72

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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.