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Finding the Fourth Proportional to 98,412.60, 147,518.10 and 48,415.80

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Solution

The fourth proportional to 98,412.60, 147,518.10 and 48,415.80 is: 72,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,412.60 : 147,518.10 = 48,415.80 : x
  2. Step 2: Convert to fraction form
    98,412.60/147,518.10 = 48,415.80/x
  3. Step 3: Cross multiply
    98,412.60x = 147,518.10 × 48,415.80
  4. Step 4: Simplify right side
    98,412.60x = 7,142,206,825.98
  5. Step 5: Solve for x
    x = 7,142,206,825.98/98,412.60
  6. Step 6: Final answer
    x = 72,574.11

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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.