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Finding the Fourth Proportional to 47,087.80, 70,631.70 and 43,807.30

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Solution

The fourth proportional to 47,087.80, 70,631.70 and 43,807.30 is: 65,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,087.80 : 70,631.70 = 43,807.30 : x
  2. Step 2: Convert to fraction form
    47,087.80/70,631.70 = 43,807.30/x
  3. Step 3: Cross multiply
    47,087.80x = 70,631.70 × 43,807.30
  4. Step 4: Simplify right side
    47,087.80x = 3,094,184,071.41
  5. Step 5: Solve for x
    x = 3,094,184,071.41/47,087.80
  6. Step 6: Final answer
    x = 65,710.95

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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.