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Finding the Fourth Proportional to 88,695.70, 133,043.55 and 86,946.10

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Solution

The fourth proportional to 88,695.70, 133,043.55 and 86,946.10 is: 130,419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,695.70 : 133,043.55 = 86,946.10 : x
  2. Step 2: Convert to fraction form
    88,695.70/133,043.55 = 86,946.10/x
  3. Step 3: Cross multiply
    88,695.70x = 133,043.55 × 86,946.10
  4. Step 4: Simplify right side
    88,695.70x = 11,567,617,802.66
  5. Step 5: Solve for x
    x = 11,567,617,802.66/88,695.70
  6. Step 6: Final answer
    x = 130,419.15

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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.