Home / 91,401.39-126,140.35-51,118.90

Finding the Fourth Proportional to 91,401.39, 126,140.35 and 51,118.90

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Solution

The fourth proportional to 91,401.39, 126,140.35 and 51,118.90 is: 70,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,401.39 : 126,140.35 = 51,118.90 : x
  2. Step 2: Convert to fraction form
    91,401.39/126,140.35 = 51,118.90/x
  3. Step 3: Cross multiply
    91,401.39x = 126,140.35 × 51,118.90
  4. Step 4: Simplify right side
    91,401.39x = 6,448,156,460.43
  5. Step 5: Solve for x
    x = 6,448,156,460.43/91,401.39
  6. Step 6: Final answer
    x = 70,547.68

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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.