Home / 67,421.39-93,041.12-39,126.47

Finding the Fourth Proportional to 67,421.39, 93,041.12 and 39,126.47

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Solution

The fourth proportional to 67,421.39, 93,041.12 and 39,126.47 is: 53,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,421.39 : 93,041.12 = 39,126.47 : x
  2. Step 2: Convert to fraction form
    67,421.39/93,041.12 = 39,126.47/x
  3. Step 3: Cross multiply
    67,421.39x = 93,041.12 × 39,126.47
  4. Step 4: Simplify right side
    67,421.39x = 3,640,370,223.06
  5. Step 5: Solve for x
    x = 3,640,370,223.06/67,421.39
  6. Step 6: Final answer
    x = 53,994.30

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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.