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Finding the Fourth Proportional to 98,438.70, 147,560.85 and 48,477.90

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Solution

The fourth proportional to 98,438.70, 147,560.85 and 48,477.90 is: 72,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,438.70 : 147,560.85 = 48,477.90 : x
  2. Step 2: Convert to fraction form
    98,438.70/147,560.85 = 48,477.90/x
  3. Step 3: Cross multiply
    98,438.70x = 147,560.85 × 48,477.90
  4. Step 4: Simplify right side
    98,438.70x = 7,153,440,130.22
  5. Step 5: Solve for x
    x = 7,153,440,130.22/98,438.70
  6. Step 6: Final answer
    x = 72,668.98

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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.