Home / 66,138.20-91,275.27-37,457.50

Finding the Fourth Proportional to 66,138.20, 91,275.27 and 37,457.50

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Solution

The fourth proportional to 66,138.20, 91,275.27 and 37,457.50 is: 51,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.20 : 91,275.27 = 37,457.50 : x
  2. Step 2: Convert to fraction form
    66,138.20/91,275.27 = 37,457.50/x
  3. Step 3: Cross multiply
    66,138.20x = 91,275.27 × 37,457.50
  4. Step 4: Simplify right side
    66,138.20x = 3,418,943,426.03
  5. Step 5: Solve for x
    x = 3,418,943,426.03/66,138.20
  6. Step 6: Final answer
    x = 51,693.93

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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.