Home / 86,117.34-118,861.92-54,329.70

Finding the Fourth Proportional to 86,117.34, 118,861.92 and 54,329.70

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Solution

The fourth proportional to 86,117.34, 118,861.92 and 54,329.70 is: 74,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,117.34 : 118,861.92 = 54,329.70 : x
  2. Step 2: Convert to fraction form
    86,117.34/118,861.92 = 54,329.70/x
  3. Step 3: Cross multiply
    86,117.34x = 118,861.92 × 54,329.70
  4. Step 4: Simplify right side
    86,117.34x = 6,457,732,455.02
  5. Step 5: Solve for x
    x = 6,457,732,455.02/86,117.34
  6. Step 6: Final answer
    x = 74,987.60

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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.