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Finding the Fourth Proportional to 98,641, 136,125.06 and 53,929

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Solution

The fourth proportional to 98,641, 136,125.06 and 53,929 is: 74,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,641 : 136,125.06 = 53,929 : x
  2. Step 2: Convert to fraction form
    98,641/136,125.06 = 53,929/x
  3. Step 3: Cross multiply
    98,641x = 136,125.06 × 53,929
  4. Step 4: Simplify right side
    98,641x = 7,341,088,360.74
  5. Step 5: Solve for x
    x = 7,341,088,360.74/98,641
  6. Step 6: Final answer
    x = 74,422.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.