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Finding the Fourth Proportional to 98,420.88, 147,586.80 and 28,283.76

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Solution

The fourth proportional to 98,420.88, 147,586.80 and 28,283.76 is: 42,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,420.88 : 147,586.80 = 28,283.76 : x
  2. Step 2: Convert to fraction form
    98,420.88/147,586.80 = 28,283.76/x
  3. Step 3: Cross multiply
    98,420.88x = 147,586.80 × 28,283.76
  4. Step 4: Simplify right side
    98,420.88x = 4,174,309,630.37
  5. Step 5: Solve for x
    x = 4,174,309,630.37/98,420.88
  6. Step 6: Final answer
    x = 42,412.85

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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.