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Finding the Fourth Proportional to 98,641.80, 147,962.70 and 61,244.10

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Solution

The fourth proportional to 98,641.80, 147,962.70 and 61,244.10 is: 91,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,641.80 : 147,962.70 = 61,244.10 : x
  2. Step 2: Convert to fraction form
    98,641.80/147,962.70 = 61,244.10/x
  3. Step 3: Cross multiply
    98,641.80x = 147,962.70 × 61,244.10
  4. Step 4: Simplify right side
    98,641.80x = 9,061,842,395.07
  5. Step 5: Solve for x
    x = 9,061,842,395.07/98,641.80
  6. Step 6: Final answer
    x = 91,866.15

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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.