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Finding the Fourth Proportional to 86,156.50, 118,894.80 and 48,430.84

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Solution

The fourth proportional to 86,156.50, 118,894.80 and 48,430.84 is: 66,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,156.50 : 118,894.80 = 48,430.84 : x
  2. Step 2: Convert to fraction form
    86,156.50/118,894.80 = 48,430.84/x
  3. Step 3: Cross multiply
    86,156.50x = 118,894.80 × 48,430.84
  4. Step 4: Simplify right side
    86,156.50x = 5,758,175,035.63
  5. Step 5: Solve for x
    x = 5,758,175,035.63/86,156.50
  6. Step 6: Final answer
    x = 66,833.90

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1.5x scale

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.