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Finding the Fourth Proportional to 60,718.40, 91,077.60 and 19,165.40

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Solution

The fourth proportional to 60,718.40, 91,077.60 and 19,165.40 is: 28,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718.40 : 91,077.60 = 19,165.40 : x
  2. Step 2: Convert to fraction form
    60,718.40/91,077.60 = 19,165.40/x
  3. Step 3: Cross multiply
    60,718.40x = 91,077.60 × 19,165.40
  4. Step 4: Simplify right side
    60,718.40x = 1,745,538,635.04
  5. Step 5: Solve for x
    x = 1,745,538,635.04/60,718.40
  6. Step 6: Final answer
    x = 28,748.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.