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Finding the Fourth Proportional to 64,785.71, 97,178.55 and 25,315.15

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Solution

The fourth proportional to 64,785.71, 97,178.55 and 25,315.15 is: 37,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,785.71 : 97,178.55 = 25,315.15 : x
  2. Step 2: Convert to fraction form
    64,785.71/97,178.55 = 25,315.15/x
  3. Step 3: Cross multiply
    64,785.71x = 97,178.55 × 25,315.15
  4. Step 4: Simplify right side
    64,785.71x = 2,460,089,570.03
  5. Step 5: Solve for x
    x = 2,460,089,570.03/64,785.71
  6. Step 6: Final answer
    x = 37,972.72

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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.