Home / 83,776.09-125,705.13-39,407.32

Finding the Fourth Proportional to 83,776.09, 125,705.13 and 39,407.32

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Solution

The fourth proportional to 83,776.09, 125,705.13 and 39,407.32 is: 59,130.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,776.09 : 125,705.13 = 39,407.32 : x
  2. Step 2: Convert to fraction form
    83,776.09/125,705.13 = 39,407.32/x
  3. Step 3: Cross multiply
    83,776.09x = 125,705.13 × 39,407.32
  4. Step 4: Simplify right side
    83,776.09x = 4,953,702,283.55
  5. Step 5: Solve for x
    x = 4,953,702,283.55/83,776.09
  6. Step 6: Final answer
    x = 59,130.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.