Home / 88,566.40-121,972.80-86,631.04

Finding the Fourth Proportional to 88,566.40, 121,972.80 and 86,631.04

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Solution

The fourth proportional to 88,566.40, 121,972.80 and 86,631.04 is: 119,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,566.40 : 121,972.80 = 86,631.04 : x
  2. Step 2: Convert to fraction form
    88,566.40/121,972.80 = 86,631.04/x
  3. Step 3: Cross multiply
    88,566.40x = 121,972.80 × 86,631.04
  4. Step 4: Simplify right side
    88,566.40x = 10,566,630,515.71
  5. Step 5: Solve for x
    x = 10,566,630,515.71/88,566.40
  6. Step 6: Final answer
    x = 119,307.44

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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.