Home / 70,920.43-97,870.88-39,090.55

Finding the Fourth Proportional to 70,920.43, 97,870.88 and 39,090.55

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Solution

The fourth proportional to 70,920.43, 97,870.88 and 39,090.55 is: 53,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.43 : 97,870.88 = 39,090.55 : x
  2. Step 2: Convert to fraction form
    70,920.43/97,870.88 = 39,090.55/x
  3. Step 3: Cross multiply
    70,920.43x = 97,870.88 × 39,090.55
  4. Step 4: Simplify right side
    70,920.43x = 3,825,826,332.73
  5. Step 5: Solve for x
    x = 3,825,826,332.73/70,920.43
  6. Step 6: Final answer
    x = 53,945.33

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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.