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Finding the Fourth Proportional to 112,886.48, 155,788.40 and 64,492.64

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Solution

The fourth proportional to 112,886.48, 155,788.40 and 64,492.64 is: 89,002.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,886.48 : 155,788.40 = 64,492.64 : x
  2. Step 2: Convert to fraction form
    112,886.48/155,788.40 = 64,492.64/x
  3. Step 3: Cross multiply
    112,886.48x = 155,788.40 × 64,492.64
  4. Step 4: Simplify right side
    112,886.48x = 10,047,205,197.38
  5. Step 5: Solve for x
    x = 10,047,205,197.38/112,886.48
  6. Step 6: Final answer
    x = 89,002.73

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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.