Home / 91,325.12-126,026.28-51,039.20

Finding the Fourth Proportional to 91,325.12, 126,026.28 and 51,039.20

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Solution

The fourth proportional to 91,325.12, 126,026.28 and 51,039.20 is: 70,432.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,325.12 : 126,026.28 = 51,039.20 : x
  2. Step 2: Convert to fraction form
    91,325.12/126,026.28 = 51,039.20/x
  3. Step 3: Cross multiply
    91,325.12x = 126,026.28 × 51,039.20
  4. Step 4: Simplify right side
    91,325.12x = 6,432,280,825.24
  5. Step 5: Solve for x
    x = 6,432,280,825.24/91,325.12
  6. Step 6: Final answer
    x = 70,432.77

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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.