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Finding the Fourth Proportional to 99,482.40, 137,292.83 and 55,878.48

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Solution

The fourth proportional to 99,482.40, 137,292.83 and 55,878.48 is: 77,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,482.40 : 137,292.83 = 55,878.48 : x
  2. Step 2: Convert to fraction form
    99,482.40/137,292.83 = 55,878.48/x
  3. Step 3: Cross multiply
    99,482.40x = 137,292.83 × 55,878.48
  4. Step 4: Simplify right side
    99,482.40x = 7,671,714,655.30
  5. Step 5: Solve for x
    x = 7,671,714,655.30/99,482.40
  6. Step 6: Final answer
    x = 77,116.30

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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.