Home / 83,417.10-125,125.65-21,087.60

Finding the Fourth Proportional to 83,417.10, 125,125.65 and 21,087.60

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Solution

The fourth proportional to 83,417.10, 125,125.65 and 21,087.60 is: 31,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,417.10 : 125,125.65 = 21,087.60 : x
  2. Step 2: Convert to fraction form
    83,417.10/125,125.65 = 21,087.60/x
  3. Step 3: Cross multiply
    83,417.10x = 125,125.65 × 21,087.60
  4. Step 4: Simplify right side
    83,417.10x = 2,638,599,656.94
  5. Step 5: Solve for x
    x = 2,638,599,656.94/83,417.10
  6. Step 6: Final answer
    x = 31,631.40

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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.