Home / 86,143.50-118,878.03-48,417.75

Finding the Fourth Proportional to 86,143.50, 118,878.03 and 48,417.75

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Solution

The fourth proportional to 86,143.50, 118,878.03 and 48,417.75 is: 66,816.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.50 : 118,878.03 = 48,417.75 : x
  2. Step 2: Convert to fraction form
    86,143.50/118,878.03 = 48,417.75/x
  3. Step 3: Cross multiply
    86,143.50x = 118,878.03 × 48,417.75
  4. Step 4: Simplify right side
    86,143.50x = 5,755,806,737.03
  5. Step 5: Solve for x
    x = 5,755,806,737.03/86,143.50
  6. Step 6: Final answer
    x = 66,816.50

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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.