Home / 99,840.48-137,808.60-59,042.40

Finding the Fourth Proportional to 99,840.48, 137,808.60 and 59,042.40

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Solution

The fourth proportional to 99,840.48, 137,808.60 and 59,042.40 is: 81,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,840.48 : 137,808.60 = 59,042.40 : x
  2. Step 2: Convert to fraction form
    99,840.48/137,808.60 = 59,042.40/x
  3. Step 3: Cross multiply
    99,840.48x = 137,808.60 × 59,042.40
  4. Step 4: Simplify right side
    99,840.48x = 8,136,550,484.64
  5. Step 5: Solve for x
    x = 8,136,550,484.64/99,840.48
  6. Step 6: Final answer
    x = 81,495.51

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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.