Home / 98,787.60-136,328.27-55,769.51

Finding the Fourth Proportional to 98,787.60, 136,328.27 and 55,769.51

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Solution

The fourth proportional to 98,787.60, 136,328.27 and 55,769.51 is: 76,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,787.60 : 136,328.27 = 55,769.51 : x
  2. Step 2: Convert to fraction form
    98,787.60/136,328.27 = 55,769.51/x
  3. Step 3: Cross multiply
    98,787.60x = 136,328.27 × 55,769.51
  4. Step 4: Simplify right side
    98,787.60x = 7,602,960,879.02
  5. Step 5: Solve for x
    x = 7,602,960,879.02/98,787.60
  6. Step 6: Final answer
    x = 76,962.70

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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.