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Finding the Fourth Proportional to 98,688.60, 148,052.10 and 42,528.60

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Solution

The fourth proportional to 98,688.60, 148,052.10 and 42,528.60 is: 63,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,688.60 : 148,052.10 = 42,528.60 : x
  2. Step 2: Convert to fraction form
    98,688.60/148,052.10 = 42,528.60/x
  3. Step 3: Cross multiply
    98,688.60x = 148,052.10 × 42,528.60
  4. Step 4: Simplify right side
    98,688.60x = 6,296,448,540.06
  5. Step 5: Solve for x
    x = 6,296,448,540.06/98,688.60
  6. Step 6: Final answer
    x = 63,801.17

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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.