Home / 83,385.09-115,071.60-45,145.04

Finding the Fourth Proportional to 83,385.09, 115,071.60 and 45,145.04

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Solution

The fourth proportional to 83,385.09, 115,071.60 and 45,145.04 is: 62,300.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,385.09 : 115,071.60 = 45,145.04 : x
  2. Step 2: Convert to fraction form
    83,385.09/115,071.60 = 45,145.04/x
  3. Step 3: Cross multiply
    83,385.09x = 115,071.60 × 45,145.04
  4. Step 4: Simplify right side
    83,385.09x = 5,194,911,409.51
  5. Step 5: Solve for x
    x = 5,194,911,409.51/83,385.09
  6. Step 6: Final answer
    x = 62,300.24

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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.