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Finding the Fourth Proportional to 58.68, 88.05 and 47.10

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Solution

The fourth proportional to 58.68, 88.05 and 47.10 is: 70.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.68 : 88.05 = 47.10 : x
  2. Step 2: Convert to fraction form
    58.68/88.05 = 47.10/x
  3. Step 3: Cross multiply
    58.68x = 88.05 × 47.10
  4. Step 4: Simplify right side
    58.68x = 4,147.16
  5. Step 5: Solve for x
    x = 4,147.16/58.68
  6. Step 6: Final answer
    x = 70.67

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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.